%0 Journal Article %T Some reliability properties of the proportional hazard rate model with upside down bathtub shaped hazard rate %A M. Shafaei Noughabi %A Rezaei Roknabadi, Abdolhamid %A Mohtashami Borzadaran, Gholam Reza %J International Journal of Reliability and Safety %@ 1479-389X %D 2016