@article{DAN_1972_202_6_a10,
     author = {S. Yu. Rotfeld},
     title = {Asymptotic behavior of the spectrum of operators defined by double {Stieltjes} operator integrals},
     journal = {Doklady Akademii Nauk},
     pages = {1280--1283},
     publisher = {mathdoc},
     volume = {202},
     number = {6},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_202_6_a10/}
}