@article{DAN_1968_183_4_a4,
     author = {P. P. Zabreiko and A. I. Povolotskii},
     title = {The eigenvectors of {Hammerstein's} operator},
     journal = {Doklady Akademii Nauk},
     pages = {758--761},
     year = {1968},
     volume = {183},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_183_4_a4/}
}