@article{ZNSL_1979_89_a15,
     author = {L. A. Molotkov},
     title = {On the equivalence between layer-periodic and transversal-isotropic media},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {219--233},
     year = {1979},
     volume = {89},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1979_89_a15/}
}