%0 Journal Article %A I. V. Boykov %A N. Yu. Kudryashova %T Approximate methods for singular integral equations in exceptional cases %J Differencialʹnye uravneniâ %D 2000 %P 1230-1237 %V 36 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2000_36_9_a7/ %G ru %F DE_2000_36_9_a7