%0 Journal Article %A L. G. Zastavenko %T On the ground state of the Hamiltonian in the simplest model of quantum-field theory %J Teoretičeskaâ i matematičeskaâ fizika %D 1971 %P 20-29 %V 7 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1971_7_1_a2/ %G ru %F TMF_1971_7_1_a2