1. V. S. Mashkevich, Kinetic Theory of Lasers [in Russian], Nauka (1971).
2. R. J. Glauber, Rendiconti della Scula Internazionale di Fisica E. Fermi, XLII Corso.
3. V. M. Strutinsky and H. C. Pauli, Physics and Chemistry of Fission, SM-122/203, Vienna (1969).
4. W. J. Swiatecki and S. Bjørnholm, Phys. Reports, 4C, 325 (1972).
5. L. D. Landau and E. M. Lifshitz, Mechanics, Oxford (1960).