@article{Osmond1989,
author = {Osmond, C. and Gardner, M.J.},
title= {Age, Period, and Cohort Models - Non-Overlapping Cohorts Dont Resolve the Identification Problem},
year = {1989},
journal = {American Journal of Epidemiology},
volume = {129},
number = {1},
pages = {31--35},
}