@article{ZNSL_1968_9_a9,
     author = {T. F. Pankratova},
     title = {Eigenfunctions of the {Laplace} operator on the surface of a~triaxial ellipsoid and in the region exterior to it},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {192--211},
     publisher = {mathdoc},
     volume = {9},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1968_9_a9/}
}