@article{ZNSL_1986_156_a0,
     author = {V. M. Babich and M. I. Ivanov},
     title = {Long wave asymptotics in elastic wave scattering problems},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {6--19},
     publisher = {mathdoc},
     volume = {156},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1986_156_a0/}
}