Contemporary Trends and Challenges in Finance Proceedings from the 4th Wroclaw International Conference in Finance - Jajuga, Krzysztof; Jajuga, Krzysztof; Locarek-Junge, Hermann; Locarek-Junge, Hermann; Orłowski, Lucjan T.; Orłowski, Lucjan T.; Staehr, Karsten; Staehr, Karsten (Springer International Publishing : Imprint: Springer, 2019)