%0 Journal Article %A V. I. Arnol'd %T Cohomology classes of algebraic functions invariant under Tschirnhausen transformations %J Funkcionalʹnyj analiz i ego priloženiâ %D 1970 %P 84-85 %V 4 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1970_4_1_a8/ %G ru %F FAA_1970_4_1_a8