@techreport{Rychtarikova2012,
author = {Rychtarikova, J. and D., Jasilionis and Grigoriev, P. },
title= {About mortality data for the Czech Republic. The Human Mortality Database. Background and documentation},
year = {2012},
URL = {http://www.mortality.org/hmd/CZE/InputDB/CZEcom.pdf},
}