@article{DAN_1973_211_6_a8,
     author = {M. I. Klyuchantsev},
     title = {Estimates of fundamental solutions of singular boundary value problems with a parameter},
     journal = {Doklady Akademii Nauk},
     pages = {1284--1286},
     publisher = {mathdoc},
     volume = {211},
     number = {6},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_211_6_a8/}
}