%0 Journal Article %A Van Ny Kyong %T Pseudoisotopy of the three-dimensional sphere $S^3$ %J Doklady Akademii Nauk %D 1971 %P 1002-1003 %V 199 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1971_199_5_a3/ %G ru %F DAN_1971_199_5_a3