1. J. B. Keller, D. M. Levy, and D. S. Ahluwalia, ?Internal and surface wave production in a stratified fluid,? Wave Motion,3, 215 (1981).
2. I. V. Sturova and V. A. Sukharev, ?The generation of internal waves by local perturbations in a fluid with a given variation of density with respect to depth,? Izv. Akad. Nauk SSSR, Fiz. Atmos. Okeana,17, 625 (1981).
3. I. V. Sturova, ?Internal waves arising in an exponentially stratified fluid in the presence of the arbitrary motion of a source,? Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 3, 67 (1980).
4. L. V. Cherkesov, Hydrodynamics of Waves [in Russian], Naukova Dumka, Kiev (1980).
5. Yu. Z. Miropol'skli, Dynamics of Internal Gravity Waves in the Ocean [in Russian], Gidrometeoizdat, Leningrad (1981).