1. M.N. Harakeh, A. van der Woude, Giant Resonances: Fundamental High-Frequency Modes of Nuclear Excitation (Oxford University Press, London, 2001)
2. P.F. Bortignon, A. Bracco, R.A. Broglia, Giant Resonances: Nuclear Structure at Finite Temperature, Contemporary Concepts in Physics, Vol. 10 (Harwood Academic, Chur, Switzerland, 1998)
3. A. Migdal, J. Phys. (URRS) 8, 331 (1944)
4. G.C. Baldwin, G.S. Klaiber, Phys. Rev. 71, 3 (1947)
5. J.R. Beene et al., Phys. Rev. 41, 920 (1990) R1332 (1990)