%0 Journal Article %A N. B. Konyukhova %A V. H. Linh %A I. B. Staroverova %T Modifications of the method of phase functions as applied to singular problems in quantum physics %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1999 %P 492-522 %V 39 %N 3 %U http://geodesic.mathdoc.fr/item/ZVMMF_1999_39_3_a11/ %G ru %F ZVMMF_1999_39_3_a11