1. On the distribution of the ratio of two samples drawn from a given bivariate correlated population;Bose;Sankhya,1935
2. On the expansion of the bivariate gamma distribution;Gupta;J. Indian Statist. Assoc.,1970
3. A two variate gamma type distribution;Kibble;Sankhya A,1941
4. Remarks on a multivariate gamma distribution;Krishnaiah;Amer. Math. Monthly,1961