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2. Tirupathi Rao, P. and R. Bharathi, 2010. Stochastic modeling in the evaluation of drug efficiency. Int. J. Stat. Syst., 5: 427-438.
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3. Tirupathi Rao, P., K. Srinivasa Rao and M. Harikrishna, 2007. Forecasting the rainfall through stochastic modeling with application to Andhra Pradesh data. J. Ultra Scientist Physical Sci., 19: 39-48.
4. Srinivasa Rao, K. and P. Tirupathi Rao, 2006. Two stage stochastic model for cancer cell growth. Indian J. Math. Math. Sci., 2: 153-168.
5. Tirupathi Rao, P. and K. Srinivasa Rao, 2004. Stochastic model for cancer cell growth under chemotherapy. Assam Statistical Rev., 18: 81-101.
6. Srinivasa Rao, K. and P. Tirupathi Rao, 2004. Stochastic model for cancer cell growth with spontaneous mutation and proliferation. Int. J. Manage. Syst., 20: 85-93.