@techreport{Martin2006,
author = {Martin, J.A. and Hamilton, B.E. and Sutton, P.D. and Ventura, S.J. and Menacker, F. and Kirmeyer, S.},
title= {Births: Final data for 2004},
year = {2006},
publisher = {National Center for Health Statistics},
address = {Hyattsville},
number = {National vital statistics reports; 55/1; 102 pp.},
}