@article{IVM_1977_4_a7,
     author = {P. E. Levin},
     title = {Classes of uniqueness and non-uniqueness of the solution of the {Cauchy} problem for equations with {a~Bessel} operator},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {60--68},
     publisher = {mathdoc},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1977_4_a7/}
}