%0 Journal Article %A R. M. Garipov %T Classification up to isomorphism of crystallographic groups on a~pseudo-Euclidean plane. II.~Lattices~$*$. Series~VII,~VIII %J Sibirskij žurnal industrialʹnoj matematiki %D 2004 %P 21-38 %V 7 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJIM_2004_7_1_a2/ %G ru %F SJIM_2004_7_1_a2