@proceedings{ ogr:kob:21:poleval, editor = "Ogrodniczuk, Maciej and Kobyliński, Łukasz", publisher = "Institute of Computer Science, Polish Academy of Sciences", isbn = "978-83-63159-31-3", title = "Proceedings of the {P}ol{E}val 2021 {W}orkshop", booktitle = "Proceedings of the {P}ol{E}val 2021 {W}orkshop", address = "Warsaw", year = "2021", pdf = "http://poleval.pl/files/poleval2021.pdf" }