@article{Lumley2004,
author = {Lumley, T.},
title= {The survival package},
year = {2004},
URL = {http://cran.r-project.org/doc/Rnews/Rnews_2004-1.pdf
%[21 March 2014},
journal = {The newsletter of the R project},
volume = {4/1},
number = {June 2004},
pages = {26--28},
}