@article {john1979life,
	title = {On a life testing problem involving the two parameter exponential distribution},
	journal = {Communications in Statistics-Theory and Methods},
	volume = {A8},
	number = {15},
	year = {1979},
	pages = {1523{\textendash}1534},
	publisher = {Taylor \& Francis},
	author = {Petkau, AJ}
}
