%0 Journal Article %A B. S. Getmanov %T Integrable two-dimensional Lorentz-invariant nonlinear model of a complex scalar field (complex sine-Gordon II) %J Teoretičeskaâ i matematičeskaâ fizika %D 1981 %P 13-23 %V 48 %N 1 %U http://geodesic.mathdoc.fr/item/TMF_1981_48_1_a1/ %G ru %F TMF_1981_48_1_a1