@techreport{Nash2011,
author = {Nash, E.J. and Jasilioniene, A. and Andreev, E.M. and Zeman, K.},
title= {A collection of R packages for the production of period fertility tables and some summary fertility indicator},
year = {2011},
doi = {10.4054/MPIDR-TR-2011-001},
publisher = {MPIDR},
address = {Rostock},
institution = {MPIDR Technical Report TR-2011-001},
}