1. Beer, T.: 1974, Atmospheric Waves, Adam Hilger,. Bristol, G.B.
2. Int.Geophys. Series 25;RG Fleagle,1980
3. Gossard, E.E. and Hooke, W.H.: 1975, Waves in the Atmosphere, Elsevier Seiet.Publ.Comp., Amsterdam.
4. Int.Geophys.Series 16;JG Holton,1972
5. Houghton J.T.: 1977, The physics of atmospher es, Cambridge University Press, Cambridge.