%0 Journal Article %A A. A. Ilyin %T Best constants in a~class of polymultiplicative inequalities for derivatives %J Sbornik. Mathematics %D 1998 %P 1335-1359 %V 189 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1998_189_9_a2/ %G en %F SM_1998_189_9_a2