%0 Journal Article %T International Bogoliubov Conference Fundamental Problems in Theoretical and Mathematical Physics %J Teoretičeskaâ i matematičeskaâ fizika %D 1999 %P 159-160 %V 118 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1999_118_1_a10/ %G ru %F TMF_1999_118_1_a10