%0 Journal Article %A Hans Höngesberg %T A fourfold refined enumeration of alternating sign trapezoids %J The electronic journal of combinatorics %D 2022 %V 29 %N 3 %U http://geodesic.mathdoc.fr/articles/10.37236/9933/ %R 10.37236/9933 %F 10_37236_9933