@article{article1a736751,
title   = {On the distribution of the minimum or maximum of a random number of i.i.d. lifetime random variables},
author = {Louzada, Francisco and Bereta, Estela Maris Pereira and Franco, Maria Aparecida de Paiva},
year = {2012},
doi = {10.4236/am.2012.34054},
journal   = {Applied Mathematics}
}