%0 Journal Article %A Ya. N. Fel'd %T On the reduction of a certain class of integral equations of the first kind to equations of the second kind %J Doklady Akademii Nauk %D 1969 %P 761-764 %V 187 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_187_4_a14/ %G ru %F DAN_1969_187_4_a14