• PrefaceJajuga, Krzysztof; Locarek-Junge, Hermann; Orlowski, Lucjan T.; Staehr, KarstenContemporary trends and challenges in finance : proceedings from the 5th WroclawInternational Conference in Finance2020 / p. v-vi https://link.springer.com/content/pdf/bfm:978-3-030-43078-8/1?pdf=chapter%20toc https://www.scopus.com/sourceid/21101077468 https://www.scopus.com/record/display.uri?eid=2-s2.0-85126118811&origin=inward&txGid=d8cb7e125d6581c29219131dadc17a11
• PrefaceJajuga, Krzysztof; Orlowski, Lucjan T.; Staehr, KarstenContemporary Trends and Challenges in Finance : Proceedings from the 2nd Wroclaw International Conference in Finance2017 / p. v-vii https://link.springer.com/book/10.1007/978-3-319-54885-2 https://www.scopus.com/sourceid/21101077468 https://www.scopus.com/record/display.uri?eid=2-s2.0-85125233304&origin=inward&txGid=1e48644aaea3bdf16d7586b9a5b8b759