@article{ZNSL_1989_179_a0,
     author = {V. M. Babich},
     title = {On asymptotic solution of the problems of diffusion and oscillation moving sources},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {6--13},
     year = {1989},
     volume = {179},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1989_179_a0/}
}