%0 Journal Article %A Alexander D. Kolesnik %T Cyclic planar random evolution with four directions %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2004 %P 27-32 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2004_2_a2/ %G en %F BASM_2004_2_a2