@article{IM2_2009_73_5_a2,
     author = {N. B. Engibaryan},
     title = {On the factorization of integral operators on spaces of summable functions},
     journal = {Izvestiya. Mathematics},
     pages = {921--937},
     year = {2009},
     volume = {73},
     number = {5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2009_73_5_a2/}
}