@article{DAN_1997_353_6_a6,
     author = {I. A. Shishmarev},
     title = {On an estimate for the eigenfunctions of a nonlinear operator},
     journal = {Doklady Akademii Nauk},
     pages = {730--733},
     publisher = {mathdoc},
     volume = {353},
     number = {6},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1997_353_6_a6/}
}