@inProceedings{Zardasht2010,
author = "V. Zardasht
 and M. Asadi
 and P. Zeephongsekul",
title = "Properties of some time dependent probability failure functions in reliability theory",
series = "ANZIAM J.",
volume = "51",
pages = "C512--C525",
year = 2010,
booktitle = "Proceedings of the 9th Biennial Engineering Mathematics and Applications Conference, EMAC-2009",
editor = "P. Howlett  and M. Nelson  and A. J. Roberts",
month = jul,
note = "\url {http://anziamj.austms.org.au/ojs/index.php/ANZIAMJ/article/view/2418} [July 30, 2010]",
keywords = "time dependent failure; functions; reversed hazard rate; mean past lifetime; proportional reversed hazard rates",
subjclass = "90B25",
}