1. Case, G.L. et al.: in press, Chin. J. Astron. Astrophys.
2. Chakrabarti, S.K.: 1990, Theory of Transonic Astrophysical Flows, World Scientific.
3. Chakrabarti, S.K.: 1993, in: J. Franco et al. (eds.), Numerical Simulations in Astrophysics, Cambridge University Press, UK, Mexico City, Mexico.
4. Chakrabarti, S.K.: 1994, in: H. Böhringer et al. (eds.), Proceedings of 17th Texas Symposium, Munich, Germany, New York Academy of Sciences, New York.
5. Chakrabarti, S.K. and Molteni, D.: 1995, MNRAS 272, 80.