%0 Journal Article %A V. I. Arnol'd %T Distribution of ovals of the real plane of algebraic curves, of involutions of four-dimensional smooth manifolds, and the arithmetic of integer-valued quadratic forms %J Funkcionalʹnyj analiz i ego priloženiâ %D 1971 %P 1-9 %V 5 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1971_5_3_a0/ %G ru %F FAA_1971_5_3_a0