@article{Sen1999d,
	title = {Convolution of geometrics and a reliability problem},
	author = {Ananda Sen and N. Balakrishnan},
	day = {15},
	journal = {Statistics \& Probability Letters},
	month = {Jul},
	number = {4},
	pages = {421--426},
	url = {http://www.sciencedirect.com/science/article/B6V1D-3XHH69M-F/1/4dd441a7d0049fb29230d6d43bde223f},
	volume = {43},
	year = {1999},
	biburl = {http://www.bibsonomy.org/bibtex/2e7cdfcccb21017beff170681ebca3519/smicha},
	keywords = {Inverse sampling }
}