1. Enduring resurgence or statistical blip? Recent trends from the Ontario Student Drug Use Survey;Adlaf;Canadian Journal of Public Health,1996
2. Trends in psychoactive substance abuse among junior and senior high school students in the Federal District (Mexico);Berenzon;Salud Mental,1996
3. Drug use among secondary students in Zimbabwe;Eide;Addiction,1995
4. Annual report on the state of the drugs problem in the European Union,1997
5. The 1995 ESPAD report;Hibell,1997