%0 Journal Article %A A. Yu. Teplinskii %T Hidden symmetry in an averaging algorithm, and the multiple spectrum of an elliptic problem with rapidly oscillating coefficients %J Differencialʹnye uravneniâ %D 1998 %P 540-545 %V 34 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1998_34_4_a14/ %G ru %F DE_1998_34_4_a14