@article{AA_1992_4_5_a0,
     author = {M. Sh. Birman and D. R. Yafaev},
     title = {The spectral shift function. {The} papers of {M.\,G.~Krein} and their further development},
     journal = {Algebra i analiz},
     pages = {1--44},
     publisher = {mathdoc},
     volume = {4},
     number = {5},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1992_4_5_a0/}
}