%0 Journal Article %A Nikolay V. Kolabutin %T Two-level cooperation in the game of pollution cost reduction %J Matematičeskaâ teoriâ igr i eë priloženiâ %D 2014 %P 3-36 %V 6 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MGTA_2014_6_4_a0/ %G ru %F MGTA_2014_6_4_a0