@article{DAN_1979_247_6_a9,
     author = {A. Pietsch},
     title = {Eigenvalues of integral operators},
     journal = {Doklady Akademii Nauk},
     pages = {1324--1327},
     publisher = {mathdoc},
     volume = {247},
     number = {6},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_247_6_a9/}
}