Uncertainty and Imprecision in Decision Making and Decision Support : Selected Papers from BOS-2020, Held on December 14-15, 2020, and IWIFSGN-2020, Held on December 10-11, 2020 in Warsaw, Poland - Atanassov, Krassimir T.; Atanassova, Vassia; Kacprzyk, Janusz; Kałuszko, Andrzej; Krawczak, Maciej; Owsiński, Jan W.; Sotirov, Sotir S.; Sotirova, Evdokia; Szmidt, Eulalia; Zadrożny, Sławomir (Cham Springer International Publishing AG, 2022)