1. K. A. Nasyrov and A. M. Shalagin, Zh. Éksp. Teor. Fiz. 81, 1649 (1981) [Sov. Phys. JETP 54, 877 (1981)].
2. K. A. Nasyrov and A. M. Shalagin, Zh. Éksp. Teor. Fiz. 83, 1685 (1982) [Sov. Phys. JETP 56, 973 (1982)].
3. K. A. Nasyrov and A. M. Shalagin, Kvant. Elektron. (Moscow) 9, 1997 (1982) [Sov. J. Quantum Electron. 12, 1298 (1982)].
4. S. G. Rautian, G. I. Smirnov, and A. M. Shalagin, Nonlinear Resonances in the Spectra of Atoms and Molecules [in Russian], Nauka, Novosibirsk (1979); S. G. Rautian and A. M. Shalagin, Kinetic Problems of Non-linear Spectroscopy, North-Holland, Amsterdam (1991).
5. Nonlinear Spectroscopy, N. Bloembergen (Ed.), Societa Italiana di Fisica (1977).