@article{ZNSL_1989_179_a3,
     author = {A. I. Bobenko},
     title = {Eigenfunctions of the {Dirichlet} and {Neumann} problems for the elliptic {sinh-Gordon} equation on a rectangle},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {32--36},
     publisher = {mathdoc},
     volume = {179},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1989_179_a3/}
}