@article{IVM_1988_4_a0,
     author = {M. M. Agrest and Ts. Sh. Chachibaya},
     title = {Expansions for {Bessel} exponential-integral functions and related functions},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--12},
     publisher = {mathdoc},
     number = {4},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1988_4_a0/}
}