Eigenfunctions of the Laplace operator on the surface of a triaxial ellipsoid and in the region exterior to it. (English. Russian original) Zbl 0195.38901
Semin. Math., V. A. Steklov Math. Inst., Leningrad 9, 87-95 (1968); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklov 9, 192-211 (1968).
