%0 Journal Article %A M. I. Klyuchantsev %T Estimates of fundamental solutions of singular boundary value problems with a parameter %J Doklady Akademii Nauk %D 1973 %P 1284-1286 %V 211 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_211_6_a8/ %G ru %F DAN_1973_211_6_a8