@article{ZNSL_1991_195_a9,
     author = {L. A. Molotcov},
     title = {On the new approach of obtaining of average effective model equations of~periodic media},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {82--102},
     year = {1991},
     volume = {195},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1991_195_a9/}
}