---
title: "Indra (Spain): research papers, co-authors and journals"
description: "Historical profile (data snapshot 2026-11-04). From 2017 to 2026 (so far), authors at Indra (Spain) took part in 4 papers in the tracked journals, most of them in information systems (2), AI (1) and operations research (1). 0 of them were published in 2025, against 0 in 2017."
url: https://scholar4ai.com/companies/indra-spain
markdown_url: https://scholar4ai.com/companies/indra-spain.md
license: CC BY-NC 4.0 (https://creativecommons.org/licenses/by-nc/4.0/)
share_text: "Historical profile (data snapshot 2026-11-04)."
data_url: https://scholar4ai.com/data/rankings.json
updated: 2026-11-04T18:03:26+09:00
window: 2026-10-06 to 2026-11-04
source: OpenAlex (CC0)
---

# Indra (Spain)

[Browse company research profiles](https://scholar4ai.com/companies/directory/page/2.md)

Historical profile. Data snapshot: 2026-11-04. This profile is outside the current selection; the figures and research below are retained from that snapshot. Browse the directory for other profiles.

Papers in the tracked journals with an author at Indra (Spain): per year and category, where they are published, the institutions its researchers write with, and its most-cited papers. A paper counts as corporate when at least one of its authors is affiliated with an institution that OpenAlex classifies as a company; it counts once for each company among its authors' affiliations. Universities are the institutions OpenAlex classifies as education.

Back to the ranking: https://scholar4ai.com/rankings/companies.md

## Key findings

- From 2017 to 2026 (so far), authors at Indra (Spain) took part in 4 papers in the tracked journals, most of them in information systems (2), AI (1) and operations research (1).
- 0 of them were published in 2025, against 0 in 2017.
- Since 2023, the institutions with the most of these papers were Universidade de Santiago de Compostela (2), Hugging Face (1) and Sorbonne Université (1).
- The journals publishing most of them were Ethics and Information Technology (2).
- The most-cited of them is “Improving aircraft approach operations taking into account noise and fuel consumption” (Journal of Air Transport Management, 2019), with 30 citations.
- Since 2023, papers in the tracked journals cited 2 of its papers 9 times; 100% of those links came from papers with a university author and 0% from its own papers.
- Its own papers since 2023 cite archived papers 38 times, 16% of them papers with a company author.
- Across everything OpenAlex indexes, Indra (Spain) has 604 works with 9,469 citations (h-index 45).
- The tracked journals hold 4 of its 271 works in OpenAlex from 2017 to 2025 (1.5%).
- Its main research topics in OpenAlex are Air Traffic Management and Optimization (33), Network Security and Intrusion Detection (26) and Radar Systems and Signal Processing (25).

## Papers per year

*Papers per publication year and category*

| Category | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 (so far) |
|---|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|
| [Information Systems](https://scholar4ai.com/categories/information-systems.md) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 |
| [AI](https://scholar4ai.com/categories/ai.md) | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| [Operations Research](https://scholar4ai.com/categories/operations-research.md) | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| All categories | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 |

## Where the papers come from

*Journals with the most papers, since 2023*

| # | Journal | Papers |
|---:|---|---:|
| 1 | [Ethics and Information Technology](https://scholar4ai.com/journals/ethics-and-information-technology.md) | 2 |

*Institutions with the most papers, since 2023*

| # | Institution | Papers |
|---:|---|---:|
| 1 | Universidade de Santiago de Compostela | 2 |
| 2 | Hugging Face | 1 |
| 3 | Sorbonne Université | 1 |
| 4 | University of Milan | 1 |
| 5 | [University of Pisa](https://scholar4ai.com/institutions/university-of-pisa.md) | 1 |
| 6 | University of Sassari | 1 |
| 7 | [Università Cattolica del Sacro Cuore](https://scholar4ai.com/institutions/universita-cattolica-del-sacro-cuore.md) | 1 |

*Countries with the most papers, since 2023*

| # | Country | Papers |
|---:|---|---:|
| 1 | Spain | 2 |
| 2 | Italy | 2 |
| 3 | France | 1 |
| 4 | United States | 1 |

*Keywords with the most papers, since 2023*

| # | Keyword | Papers |
|---:|---|---:|
| 1 | [explainable AI](https://scholar4ai.com/keywords/explainable-ai.md) | 2 |
| 2 | [AI ethics](https://scholar4ai.com/keywords/ai-ethics.md) | 1 |
| 3 | AI explanations | 1 |
| 4 | accountability | 1 |
| 5 | decision-making | 1 |
| 6 | ethical AI governance | 1 |
| 7 | ethical complexity | 1 |
| 8 | ethical risk assessment | 1 |
| 9 | ethics education | 1 |
| 10 | explainability | 1 |

## Most-cited papers

*Most-cited papers since 2017*

| # | Citations | Per month | Title | Journal | Published | Authors |
|---:|---:|---:|---|---|---|---|
| 1 | 30 | 0.3 | [Improving aircraft approach operations taking into account noise and fuel consumption](https://doi.org/10.1016/j.jairtraman.2019.03.004) | [Journal of Air Transport Management](https://scholar4ai.com/journals/journal-of-air-transport-management.md) | 2019-04-01 | A. Rodríguez-Díaz, Belarmino Adenso-Dı́az, Pilar L. González‐Torre |
| 2 | 20 | 0.7 | [Mapping the landscape of ethical considerations in explainable AI research](https://doi.org/10.1007/s10676-024-09773-7) | [Ethics and Information Technology](https://scholar4ai.com/journals/ethics-and-information-technology.md) | 2024-06-25 | Luca Nannini, Marta Marchiori Manerba, Isacco Beretta |
| 3 | 12 | 0.5 | [Nullius in Explanans: an ethical risk assessment for explainable AI](https://doi.org/10.1007/s10676-024-09800-7) | [Ethics and Information Technology](https://scholar4ai.com/journals/ethics-and-information-technology.md) | 2024-12-13 | Luca Nannini, Diletta Huyskes, Enrico Panai et al. |
| 4 | 4 | 0.0 | [Compact and efficient representation of general graph databases](https://doi.org/10.1007/s10115-018-1275-x) | [Knowledge and Information Systems](https://scholar4ai.com/journals/knowledge-and-information-systems.md) | 2018-10-04 | Sandra Álvarez-García, Borja Freire, Susana Ladra et al. |

## Who cites its research

*Institutions whose papers cite it most, since 2023*

| # | Institution | Kind | Country | Links |
|---:|---|---|---|---:|
| 1 | Eskisehir Technical University | University | Turkey | 2 |
| 2 | University of New Brunswick | University | Canada | 1 |
| 3 | Universitat de Miguel Hernández d'Elx | University | Spain | 1 |
| 4 | [Hong Kong Polytechnic University](https://scholar4ai.com/institutions/hong-kong-polytechnic-university.md) | University | Hong Kong | 1 |
| 5 | California State University, Fullerton | University | United States | 1 |
| 6 | Erzincan Binali Yıldırım University | University | Turkey | 1 |
| 7 | University of Szeged | University | Hungary | 1 |
| 8 | [Sichuan University](https://scholar4ai.com/institutions/sichuan-university.md) | University | China | 1 |
| 9 | Iğdır Üniversitesi | University | Turkey | 1 |
| 10 | Huzhou College | University | China | 1 |

## What its papers cite

*Institutions its papers cite most, since 2023*

| # | Institution | Kind | Country | Links |
|---:|---|---|---|---:|
| 1 | [University of Oxford](https://scholar4ai.com/institutions/university-of-oxford.md) | University | United Kingdom | 6 |
| 2 | [Universidad de Granada](https://scholar4ai.com/institutions/universidad-de-granada.md) | University | Spain | 3 |
| 3 | Tecnalia | Other | Spain | 3 |
| 4 | Saarland University | University | Germany | 3 |
| 5 | [Delft University of Technology](https://scholar4ai.com/institutions/delft-university-of-technology.md) | University | Netherlands | 3 |
| 6 | [University of Pisa](https://scholar4ai.com/institutions/university-of-pisa.md) | University | Italy | 2 |
| 7 | Institut national de recherche en sciences et technologies du numérique | Government | France | 2 |
| 8 | [University of Padua](https://scholar4ai.com/institutions/university-of-padua.md) | University | Italy | 2 |
| 9 | University of the Basque Country | University | Spain | 2 |
| 10 | TU Dortmund University | University | Germany | 2 |

More: https://scholar4ai.com/corporate-citations.md · https://scholar4ai.com/industry-university.md

## In OpenAlex

*Indra (Spain) in OpenAlex*

| Item | Value |
|---|---|
| Type | Company |
| Location | Madrid, Spain |
| Also known as | Indra Sistemas, S.A. |
| Units listed in OpenAlex | 1 |
| Works in OpenAlex | 604 |
| Citations | 9,469 |
| h-index | 45 |
| i10-index | 272 |
| 2-year mean citedness | 1.64 |
| Website | [www.indracompany.com](https://www.indracompany.com/) |
| ROR | [ror.org/00vpq6g39](https://ror.org/00vpq6g39) |
| OpenAlex | [openalex.org/I37446213](https://openalex.org/I37446213) |

*Works and citations per year in OpenAlex, and its papers in the tracked journals*

| Year | Works in OpenAlex | Citations received | In the tracked journals | Share |
|---|---:|---:|---:|---:|
| 2026 (so far) | 33 | 372 | 0 | 0.0% |
| 2025 | 28 | 517 | 0 | 0.0% |
| 2024 | 36 | 469 | 2 | 5.6% |
| 2023 | 34 | 522 | 0 | 0.0% |
| 2022 | 19 | 532 | 0 | 0.0% |
| 2021 | 29 | 534 | 0 | 0.0% |
| 2020 | 15 | 399 | 0 | 0.0% |
| 2019 | 48 | 318 | 1 | 2.1% |
| 2018 | 34 | 320 | 1 | 2.9% |
| 2017 | 28 | 282 | 0 | 0.0% |

*Main research topics (OpenAlex, all works)*

| # | Topic | Field | Works |
|---:|---|---|---:|
| 1 | Air Traffic Management and Optimization | Engineering | 33 |
| 2 | Network Security and Intrusion Detection | Computer Science | 26 |
| 3 | Radar Systems and Signal Processing | Engineering | 25 |
| 4 | Semantic Web and Ontologies | Computer Science | 23 |
| 5 | Software Engineering Research | Computer Science | 21 |

From OpenAlex's own record of the institution (CC0), read again monthly. Works and citations count everything OpenAlex indexes, not only the tracked journals; topics are OpenAlex's classification of those works.

## Cite this page

Scholar4AI. (2026). Indra (Spain). Journal and Conference Research Rankings. Retrieved November 4, 2026, from https://scholar4ai.com/companies/indra-spain

```bibtex
@misc{scholar4ai-companies-indra-spain,
  author = {{Scholar4AI}},
  title = {Indra (Spain)},
  year = {2026},
  howpublished = {\url{https://scholar4ai.com/companies/indra-spain}},
  urldate = {2026-11-04},
  note = {Journal and Conference Research Rankings; data from OpenAlex (CC0); licensed CC BY-NC 4.0}
}
```

License: CC BY-NC 4.0 (https://creativecommons.org/licenses/by-nc/4.0/).