@article{10_37236_9933,
     author = {Hans H\"ongesberg},
     title = {A fourfold refined enumeration of alternating sign trapezoids},
     journal = {The electronic journal of combinatorics},
     year = {2022},
     volume = {29},
     number = {3},
     doi = {10.37236/9933},
     zbl = {1496.05005},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/9933/}
}