%0 Journal Article %A V. L. Krupenin %T Transformation of the vibration modes of a string that interacts %J Doklady Akademii Nauk %D 1990 %P 1390-1394 %V 313 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_313_6_a25/ %G ru %F DAN_1990_313_6_a25