International Journal of Applied Mathematics and Machine Learning[1] E. J. Gumbel, Bivariate exponential distributions, J. Amer.
Statist. Assoc. 55(292) (1960), 698-707.
[2] J. E. Freund, A bivariate extension of the exponential
distribution, J. Amer. Statist. Assoc. 56(296) (1961), 971-977.
[3] A. W. Marshall and I. Olkin, A multivariate exponential
distribution, J. Amer. Statist. Assoc. 62(317) (1967), 30-44.
[4] H. W. Block and A. P. Basu, A continuous, bivariate exponential
extension, J. Amer. Statist. Assoc. 69(348) (1974), 1031-1037.
[5] F. Downton, Bivariate exponential distributions in reliability
theory, J. R. Stat. Soc. Ser. B Stat. Methodol. 32 (1970), 408-417.
[6] Arjun K. Gupta and Saralees Nadarajah, Exact and approximate
distributions for the linear combination of inverted Dirichlet
components, J. Japan Staist. Soc. 36(2) (2006), 225-236.
[7] Yunfei Guo, Exact distributions for the linear combination of
bivariate exponential components of dependent variable, Mathematics in
Practice and Theory 40(16) (2010), 179-183.
[8] Zhang Lili, Revise of exact distributions for the linear
combination of bivariate exponential components of dependent variable,
Journal of Xi’an Shiyou University (Natural Science), 27(3)
(2012), 102-105.
[9] Saralees Nadarajah and Samuel Kotz, Reliability for some bivariate
exponential distributions, Mathematical Problems in Engineering
(2006), 1-14.
[10] Kan Cheng and Jinhua Cao, Introduction to Reliability Mathematics
(the Revised Edition), Higher Education Press, Beijing, 2006.
