%0 Journal Article %A Tymchatyn, E. D. %T Partial Orders on the 2-Cell %J Canadian mathematical bulletin %D 1975 %P 411-416 %V 18 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-075-x/ %R 10.4153/CMB-1975-075-x %F 10_4153_CMB_1975_075_x