Accepted/Published
Refereed

1. Ambagaspitiya, R.S. (2003). Aggregate survival probability of a portfolio with dependent sub-portfolios. To appear in Insurance: Mathematics and Economics.
2. Ambagaspitiya, R.S. (1999). On the distributions of two classes of correlated aggregate claims. Insurance: Mathematics and Economics 24, 301-308.
3. Ambagaspitiya, R.S. (1998a). On the distribution of a sum of correlated aggregate claims. Insurance: Mathematics and Economics 23F, 15-19.
4. Ambagaspitiya, R.S. (1998b). Compound bivariate Lagrangian Poisson distributions. Insurance: Mathematics and Economics 23, 21-31.
5. Ambagaspitiya, R.S. (1995). A family of discrete distributions, Insurance: Mathematics and Economics 16, 107-127.
6. Ambagaspitiya, R.S. and Balakrishnan, N. (1994). On the compound generalized Poisson distributions, ASTIN Bulletin 24(2), 255-264.
7. Balakrishnan, N. and Ambagaspitiya, R.S. (1988). Relationships among moments of order statistics in samples from two related outlier models and some applications, Communication in Statistics- Theory and Methods, 17, 2327-2341.
8. Balakrishnan, N. and Ambagaspitiya, R.S. (1988). An empirical power comparison of three tests of exponentiality under mixture- and outlier- models, Biometrical Journal, 31, 49-66.
9. Tiku, M.L. , Balakrishnan, N. and Ambagaspitiya, R.S. (1989). Error rates of a robust classification procedure based on dichotomous and continuous random variables, Communication in Statistics - Simulation and Computation, 18, 571-588.
10. Balakrishnan, N. and Ambagaspitiya, R.S. (1991). Robust classification procedures and their applications to anthropometry in C.R. Rao and R. Chakraborty, editors, Handbook of Statistics - Vol 8, 145-202, North Holland, Co.,
11. Balakrishnan, N. and Ambagaspitiya, R.S. (1992). A robust method of estimation based on the MML estimators for a simple linear regression model, Journal of Statistical Planning and Inference, 30, 267-279.
12. Balakrishnan, N. and Ambagaspitiya, R.S. (1995). Classical Classification Procedure Based on k dichotomous and one continuous variables. Parisankhyan Samikkha 2(1), 1-11.
13. Balakrishnan, N. , Mouleeswaran, C. and Ambagaspitiya, R.S. (1996). BLUE's of location and scale parameters of Laplace distribution based on Type-II censored samples and associated inference. Microelectroincs and Reliability 3(3), 371-375.

Conference Participations

1. Ambagaspitiya, R.S. (2003). On pricing dependent insurance portfolios. Presented at the 37th annual meeting, Western Risk & Insurance Association, Jan.3 - Jan 5, 2003, Maui Prince Hotel, Maui, Hawaii.
2. Ambagaspitiya, R.S. (2001). Multivariate total claims models in risk theory. Presented at the fifth Asia Pacific Risk and Insurance Association's annual meeting, July 15-18, 2001, Indian Institute of Management, Bangalore, India.
3. Ambagaspitiya, R.S. (1995). A family of discrete distributions and associated compound distributions. Presented at Actuarial Science section of A.C. Aitken Centenary Conference, Aug. 28 - Sept. 1, 1995, University of Otago, Dunedin, New Zealand.
4. Ambagaspitiya, R.S. (1995). Computing moment of order statistics when sample size is random. Presented at the 6th International conference on environmetrics, December 6-9, 1995, Dynasty Hotel, Kula Lumpur, Malaysia.
5. Ambagaspitiya, R.S. (1994). Manipulating Lagrangian distributions and associated compound distributions with Maple. Presented at the 29th Actuarial Research Conference, Aug. 25-27, 1994, Oregon State university, Corvallis.