%0 Journal Article %A D. V. Yur'ev %T Quantum projective field theory: Quantum-field analogs of the Euler formulas %J Teoretičeskaâ i matematičeskaâ fizika %D 1992 %P 172-176 %V 92 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1992_92_1_a17/ %G ru %F TMF_1992_92_1_a17