@article{DAN_1957_117_4_a0,
     author = {R. G. Barantsev},
     title = {Two expansion theorems connected with boundary problems for the equation $\psi_{\sigma\sigma}-K(\sigma)\psi_{\theta\theta}=0$},
     journal = {Doklady Akademii Nauk},
     pages = {551--554},
     publisher = {mathdoc},
     volume = {117},
     number = {4},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_117_4_a0/}
}