@article{UFA_2019_11_1_a0,
     author = {A. G. Baskakov and E. E. Dikarev},
     title = {Spectral theory of functions in studying partial differential operators},
     journal = {Ufa mathematical journal},
     pages = {3--18},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2019_11_1_a0/}
}