@article{SM_2005_196_12_a4,
     author = {Kh. Kh. Murtazin and Z. Yu. Fazullin},
     title = {Non-nuclear perturbations of discrete operators and trace formulae},
     journal = {Sbornik. Mathematics},
     pages = {1841--1874},
     publisher = {mathdoc},
     volume = {196},
     number = {12},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2005_196_12_a4/}
}