1. L. D. Akulenko and S. V. Nesterov, “Eigenvalues of an elliptic membrane,” Izv. Ross. Akad. Nauk, Mekh. Tverd. Tela, No. 1, 191–202 (2000).
2. S. N. Aristov and V. V. Pukhnachev, “On the equations of rotationally symmetric motion of a viscous incompressible fluid,” Dokl. Ross. Akad. Nauk, 394, No. 5, 611–614 (2004).
3. V. V. Bulatov, Yu. V. Vladimirov, V. G. Danilov, and S. Yu. Dobrokhotov, “An example of calculating the ‘eye’ of a typhoon on the basis of the V. P. Maslov conjecture,” Dokl. Ross. Akad. Nauk, 338, 102–105 (1994).
4. F. J. Chatelon and P. Orenga, “On a non-homogeneous shallow-water problem,” RAIRO, Modélisation Math. Anal. Numér., 31, No. 1, 27–55 (1997).
5. V. G. Danilov, V. P. Maslov, and V. M. Shelkovich, “Algebras of singularities of generalized solutions of strictly hyperbolic systems of first-order quasilinear equations,” Teor. Mat. Fiz., 114, 3–55 (1998).