%0 Journal Article %A B. Pelloni %T Spectral analysis of the~elliptic sine-Gordon equation in the~quarter plane %J Teoretičeskaâ i matematičeskaâ fizika %D 2009 %P 189-201 %V 160 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2009_160_1_a17/ %G ru %F TMF_2009_160_1_a17