@article{DAN_1991_321_2_a12,
     author = {P. I. Naumkin and I. A. Shishmarev},
     title = {On the asymptotic behavior as $t\to\infty$ of solutions of some},
     journal = {Doklady Akademii Nauk},
     pages = {290--293},
     publisher = {mathdoc},
     volume = {321},
     number = {2},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_321_2_a12/}
}