@article{SM_1971_13_3_a7,
     author = {P. P. Zabreiko},
     title = {The {Schaefer} method in the theory of {Hammerstein} integral equations},
     journal = {Sbornik. Mathematics},
     pages = {451--471},
     year = {1971},
     volume = {13},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1971_13_3_a7/}
}