%0 Journal Article %A V. A. Kolmykov %T On the investigation of the stability of hydrocarbon molecules: zero pulsations in the spectra of periodic graphs %J Sibirskij žurnal industrialʹnoj matematiki %D 2007 %P 90-95 %V 10 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJIM_2007_10_1_a8/ %G ru %F SJIM_2007_10_1_a8