%0 Journal Article %A B. A. Malomed %T On the theory of spiral and concentric waves in active media %J Doklady Akademii Nauk %D 1986 %P 327-332 %V 291 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1986_291_2_a17/ %G ru %F DAN_1986_291_2_a17