About the Authors
- Helena Mihaljević-Brandt
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Contributed equally to this work with: Helena Mihaljević-Brandt, Lucía Santamaría, Marco Tullney
* E-mail: helena.m-b@t-online.de (HMB); lucia.santamaria@ymail.com (LS); marco.tullney@tib.eu (MT)
Affiliation Independent Researcher, Berlin, Germany
- Lucía Santamaría
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Contributed equally to this work with: Helena Mihaljević-Brandt, Lucía Santamaría, Marco Tullney
* E-mail: helena.m-b@t-online.de (HMB); lucia.santamaria@ymail.com (LS); marco.tullney@tib.eu (MT)
Affiliation Independent Researcher, Potsdam, Germany
- Marco Tullney
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Contributed equally to this work with: Helena Mihaljević-Brandt, Lucía Santamaría, Marco Tullney
* E-mail: helena.m-b@t-online.de (HMB); lucia.santamaria@ymail.com (LS); marco.tullney@tib.eu (MT)
Affiliation German National Library of Science and Technology (TIB), Hannover, Germany
Competing Interests
We have the following interests: HMB was affiliated to The unbelievable Machine Company GmbH during the course of the study. LS was affiliated to komoot GmbH during the course of the study. HMB and LS were formerly involved with FIZ Karlsruhe as field editors of the zbMATH service; HMB was also the deputy head of department of mathematics and computer science at FIZ Karlsruhe. There are no patents, products in development or marketed products to declare. This does not alter our adherence to all the PLOS ONE policies on sharing data and materials.
Author Contributions
Conceptualization: HMB LS MT. Data curation: HMB LS MT. Formal analysis: HMB LS MT. Funding acquisition: HMB LS MT. Investigation: HMB LS MT. Methodology: HMB LS MT. Project administration: HMB LS MT. Resources: HMB LS MT. Software: HMB LS MT. Supervision: HMB LS MT. Validation: HMB LS MT. Visualization: HMB LS MT. Writing – original draft: HMB LS MT. Writing – review & editing: HMB LS MT.