@article{ZNSL_1998_250_a14,
     author = {L. A. Molotkov},
     title = {On the derivation methods of the equations describing the effective models of layered media},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {219--243},
     year = {1998},
     volume = {250},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1998_250_a14/}
}