Pekka Hakkarainen

发表

Pekka Hakkarainen, Tuukka Tammi, Christoffer Tigerstedt, 2007 .

Aili Malm, Martin Bouchard, Holly Nguyen, 2015, The International journal on drug policy.

Anne-Sofie Christensen, Aili Malm, Martin Bouchard, 2015, The International journal on drug policy.

Aili Malm, Martin Bouchard, Holly Nguyen, 2012 .