@article{IVM_1991_6_a12,
     author = {M. M. Agrest},
     title = {Some relations for exponential-integral {Bessel} functions of the first kind},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {67--69},
     publisher = {mathdoc},
     number = {6},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1991_6_a12/}
}