@article{SM_1985_52_1_a4,
     author = {A. G. Baskakov},
     title = {Harmonic analysis of cosine and exponential operator-valued functions},
     journal = {Sbornik. Mathematics},
     pages = {63--90},
     publisher = {mathdoc},
     volume = {52},
     number = {1},
     year = {1985},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1985_52_1_a4/}
}