@article{DE_1986_22_9_a20,
     author = {N. Yu. Kapustin},
     title = {Problems on the convergence of spectral expansions in eigen- and associated functions of a parabolic operator},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1616--1618},
     publisher = {mathdoc},
     volume = {22},
     number = {9},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_9_a20/}
}