Scientific usage of the Pencil Code

A search using ADS https://ui.adsabs.harvard.edu lists the papers in which the Pencil Code is being quoted. In this document we present the papers that are making use of the code either for their own scientific work of those authors, or for code comparison purposes. We include conference proceedings, which make up 15-20% of all papers. We classify the references by year and by topic, although the topics are often overlapping. The primary application of the Pencil Code lies in astrophysics, in which case we classify the papers mostly by the field of research. Additional applications can also be found in meteorology and combustion.