%0 Journal Article %A Beáta Bényi %A Toshiki Matsusaka %T On the combinatorics of symmetrized poly-Bernoulli numbers %J The electronic journal of combinatorics %D 2021 %V 28 %N 1 %U http://geodesic.mathdoc.fr/articles/10.37236/9743/ %R 10.37236/9743 %F 10_37236_9743