%0 Journal Article %A A. N. Kvinikhidze %A V. A. Matveev %A A. N. Tavkhelidze %A A. A. Khelashvili %T Spectral and projection properties of “two-time” Green's functions of $n$ particles in null-plane quantum field theory %J Teoretičeskaâ i matematičeskaâ fizika %D 1976 %P 3-17 %V 29 %N 1 %U http://geodesic.mathdoc.fr/item/TMF_1976_29_1_a0/ %G ru %F TMF_1976_29_1_a0