%0 Journal Article %A N. A. Nikishin %T Fixed points of diffeomorphisms of two-dimensional spheres preserving an oriented plane %J Funkcionalʹnyj analiz i ego priloženiâ %D 1974 %P 84-85 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1974_8_1_a17/ %G ru %F FAA_1974_8_1_a17