@article{AA_2011_23_2_a4,
     author = {E. S. Vasilevskaya and T. A. Suslina},
     title = {Threshold approximations of a~factorized selfadjoint operator family with the first and the second correctors taken into account},
     journal = {Algebra i analiz},
     pages = {102--146},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2011_23_2_a4/}
}