1. S. P. D'yakov, ?Stability of shock waves,? Zh. Eksp. Teor. Fiz.,27, No. 3 (9), 288?296 (1954).
2. V. M. Kontorovich, ?Problem of stability of shock waves,? Zh. Eksp. Teor. Fiz.,33, No. 6 (12), 1525?1526 (1957).
3. S. V. Iordanskii, ?Stability of a plane, stationary shock wave,? Prikl. Mat. Mekh.,21, No. 4, 465?472 (1957).
4. R. M. Zaidel', ?Evolution of perturbations in plane shock waves,? Prikl. Mat. Teor. Fiz., No. 4, 30?39 (1967).
5. A. M. Blokhin, ?A mixed problem for the system of acoustic equations with boundary conditions on a shock wave,? Preprint VTs Sib. Otd. Akad. Nauk SSSR, No. 110, Novosibirsk (1978).