@article{01590799, title = {Kre\v\i n's trace formula and the spectral shift function.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {25}, year = {2001}, pages = {239-252}, doi = {10.1155/S0161171201004318}, zbl = {0983.47009}, language = {en}, url = {http://dml.mathdoc.fr/item/01590799} }
Boyadzhiev, Khristo N. Kreǐn's trace formula and the spectral shift function.. International Journal of Mathematics and Mathematical Sciences, Tome 25 (2001) pp. 239-252. doi : 10.1155/S0161171201004318. http://gdmltest.u-ga.fr/item/01590799/