Distribution					References
Exponential				-	Johnson et al. [4]
Rayleigh				-	Rayleigh [5]
Weibull					Johnson et al. [4]
Modified Weibull					Lai et al. [6]
Weibull extension					Xie et al. [7]
Gompertz					Gompertz [8]
Exponential power					Smith & Bain [9]
Chen				b	Chen [10]
Pham					Pham [11]
Lindley				-	Lindley [12]
Inverse Lindley				-	Sharma et al. [13]
Power Lindley					Ghitany et al. [14]
Generalized inverse Lindley					Sharma et al. [15]
Two parameters Lindley				-	Shanker et al. [16]
Extended power Lindley					Alkarni [3]
Extended inverse Lindley					Alkarni [17]