%0 Journal Article %A Atkinson, F. V. %T The Reversibility of a Differentiable Mapping %J Canadian mathematical bulletin %D 1961 %P 161-181 %V 4 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1961-020-5/ %R 10.4153/CMB-1961-020-5 %F 10_4153_CMB_1961_020_5