%0 Journal Article %A P. M. Akhmet'ev %T On isotopic and discrete realizations of maps of anĀ $n$-dimensional sphere in Euclidean space %J Sbornik. Mathematics %D 1996 %P 951-980 %V 187 %N 7 %U http://geodesic.mathdoc.fr/item/SM_1996_187_7_a0/ %G en %F SM_1996_187_7_a0