TY - JOUR AU - N. S. Bakhvalov AU - M. È. Èglit TI - Variational properties of averaged equations for periodic media JO - Informatics and Automation PY - 1990 SP - 5 EP - 19 VL - 192 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1990_192_a1/ LA - ru ID - TRSPY_1990_192_a1 ER -