V. Wenzel

The life skills program IPSY: positive influences on school bonding and prevention of substance misuse.

R. Silbereisen, K. Weichold, V. Wenzel, 2009, Journal of adolescence.

Cross-cultural evaluation of a life-skills programme to combat adolescent substance misuse

R. Silbereisen, F. Giannotta, K. Weichold, 2006 .