1. H. C. Thomas, Ann. Rev. Astron. Astrophys.,15, 127 (1977).
2. L. R. Yungelson and A. G. Masevich, Sov. Sci. Rev. Sect. E., Astrophys. Space Phys. Rev.,2, 29 (1983).
3. M. A. Svechnikov, Catalog of Orbital Elements, Masses, and Luminosities of Close Binaries [in Russian], Izd. Ur. GU, Sverdlovsk (1969).
4. A. G. Massevitch and L. R. Yungelson, Mem. Soc. Astron. Ital.,46, 217 (1975).
5. J. B. Zirker, in: Solar Phenomena in Stars and Stellar Systems (eds. R. N. Bonnet and A. A. Dupree, D. Reidel, Dordrecht (1981), p. 301.