@article {ClKi2008, author = {Claesson, Anders and Kitaev, Sergey}, title = {Classification of bijections between 321- and 132-avoiding permutations}, journal = {S\'{e}m. Lothar. Combin.}, fjournal = {S\'{e}minaire Lotharingien de Combinatoire}, volume = {60}, year = {2008}, pages = {Art. B60d, 30}, }