The increase in the association of education and cocaine use over the 1980s and 1990s: Evidence for a ‘historical period’ effect

Miech, Richard Allen; Chilcoat, Howard; Harder, Valerie S. (2005). The increase in the association of education and cocaine use over the 1980s and 1990s: Evidence for a 'historical period' effect. Drug and alcohol dependence. 79(3), 311-320.