@article{MZM_2007_81_6_a12,
     author = {M. S. Denisov},
     title = {The {Spectral} {Function} for {Some} {Products} of {Self-Adjoint} {Operators}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {948--951},
     publisher = {mathdoc},
     volume = {81},
     number = {6},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2007_81_6_a12/}
}