%0 Journal Article %A V. I. Kruglov %T Poisson approximation for the distribution of the number of “parallelograms” in a random sample from $\mathbb Z_N^q$ %J Matematičeskie voprosy kriptografii %D 2012 %P 63-78 %V 3 %N 2 %U http://geodesic.mathdoc.fr/item/MVK_2012_3_2_a2/ %G ru %F MVK_2012_3_2_a2