@article{SM_2000_191_12_a3,
     author = {N. B. Engibaryan},
     title = {Setting and solving several factorization problems for integral operators},
     journal = {Sbornik. Mathematics},
     pages = {1809--1825},
     publisher = {mathdoc},
     volume = {191},
     number = {12},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2000_191_12_a3/}
}