@article{DAN_1993_331_1_a1,
     author = {S. A. Vavilov},
     title = {Nontrivial solutions of some classes of operator equations},
     journal = {Doklady Akademii Nauk},
     pages = {7--10},
     publisher = {mathdoc},
     volume = {331},
     number = {1},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_331_1_a1/}
}