@article{Ekamper1993,
author = {Ekamper, P. and Keilman, N.},
title= {Sensitivity analysis in a multidimensional demographic ppojection model with a two-sex algorithm},
year = {1993},
doi = {10.1080/08898489309525354},
journal = {Mathematical Population Studies },
volume = {4},
number = {1},
pages = {21--36},
}