add first CITATION.cff

CITATION.cff

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+---
+cff-version: 1.2.0
+message: "If you want to cite this ontology, please cite it as below."
+type: dataset
+title: "SNIK Ontology"
+abstract: "SNIK is an ontology of information management in hospitals"
+repository-code: 'https://github.com/snikproject/ontology'
+authors:
+  - family-names: Winter
+    given-names: Alfred
+    orcid: https://orcid.org/0000-0003-0179-954X
+    affiliation: "Leipzig University, Institute for Medical Informatics, Statistics and Epidemiology, Leipzig, Germany"
+  - family-names: Paech
+    given-names: Barbara
+    affiliation: "Heidelberg University, Institute for Computer Science, Heidelberg, Germany"
+  - family-names: Jahn
+    given-names: Franziska
+    orcid: https://orcid.org/0000-0002-7687-8544
+    affiliation: "Leipzig University, Institute for Medical Informatics, Statistics and Epidemiology, Leipzig, Germany"
+  - family-names: Schneider
+    given-names: Birgit
+    affiliation: "Heidelberg University, Department of Computer Science, Chair of Software Engineering"
+  - family-names: Kücherer
+    given-names: Christian
+    orcid: https://orcid.org/0000-0001-5608-482X
+    affiliation: "Heidelberg University, Institute for Computer Science, Heidelberg, Germany"
+  - family-names: Höffner
+    given-names: Konrad
+    orcid: https://orcid.org/0000-0001-7358-3217
+    affiliation: "Leipzig University, Institute for Medical Informatics, Statistics and Epidemiology, Leipzig, Germany"
+  - family-names: Pause
+    given-names: Thomas
+  - family-names: Schaaf
+    given-names: Michael
+  - family-names: Zeiser
+    given-names: Anatoli
+  - family-names: Schöbel
+    given-names: Martin
+  - family-names: Tahar
+    given-names: Kais
+  - family-names: Lotzmann
+    given-names: Lydia
+  - family-names: Gharib
+    given-names: Iman
+  - family-names: Kahmann
+    given-names: Christian
+keywords:
+  - ontology
+  - semantic web
+  - information management
+  - health information systems
+  - linked open data
+license: "CC-BY-NC-SA-4.0"
+identifiers:
+  - type: doi
+    value: 10.5281/zenodo.8300605