@article{Schulze2006,
author = {Schulze, A. and Mons, U.},
title= {The evolution of educational inequalities in smoking: A changing relationship and a cross-over effect among German birth cohorts of 1921-70},
year = {2006},
doi = {10.1111/j.1360-0443.2006.01458.x},
journal = {Addiction},
volume = {101},
number = {7},
pages = {1051--1056},
}