%0 Journal Article %A V. M. Kharlamov %T Classification of nonsingular surfaces of degree $4$ in $\mathbb{RP}^3$ with respect to rigid isotopies %J Funkcionalʹnyj analiz i ego priloženiâ %D 1984 %P 49-56 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1984_18_1_a6/ %G ru %F FAA_1984_18_1_a6