@article{EJC_1996__3_1_118913,
     author = {Ekhad, Shalosh B. and Zeilberger, Doron},
     title = {The number of solutions of  in triangular matrices over .},
     journal = {The Electronic Journal of Combinatorics [electronic only]},
     publisher = {mathdoc},
     volume = {3},
     number = {1},
     year = {1996},
     zbl = {0851.15010},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/EJC_1996__3_1_118913/}
}