• PrefaceJajuga, Krzysztof; Locarek-Junge, Hermann; Orlowski, T. Lucjan; Staehr, KarstenContemporary Trends and Challenges in Finance : Proceedings from the 6th Wroclaw International Conference in Finance2021 / p. v-vi https://link.springer.com/book/10.1007/978-3-030-73667-5 https://www.scopus.com/sourceid/21101077468 https://www.scopus.com/record/display.uri?eid=2-s2.0-85125313725&origin=inward&txGid=1634b77d3edeb4da653dfd5b5028e24c