%0 Journal Article %A E. P. Dolzhenko %T Some estimates concerning algebraic hypersurfaces and derivatives of rational functions %J Doklady Akademii Nauk %D 1961 %P 1287-1290 %V 139 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_139_6_a2/ %G ru %F DAN_1961_139_6_a2