%0 Journal Article %A Péter Hajnal %A Gábor V. Nagy %T A bijective proof of Shapiro's Catalan convolution %J The electronic journal of combinatorics %D 2014 %V 21 %N 2 %U http://geodesic.mathdoc.fr/articles/10.37236/3909/ %R 10.37236/3909 %F 10_37236_3909