Gerrit Kamphausen

Sharing, Group-Buying, Social Supply, Offline and Online Dealers: how Users in a Sample from Six European Countries Procure New Psychoactive Substances (NPS)

M. Van Hout, S. Henriques, K. Felvinczi, 2018, International Journal of Mental Health and Addiction.

Digital figurations in the online trade of illicit drugs: A qualitative content analysis of darknet forums.

Bernd Werse, Gerrit Kamphausen, 2019, The International journal on drug policy.

Health and Social Problems Associated with Recent Novel Psychoactive Substance (NPS) Use Amongst Marginalised, Nightlife and Online Users in Six European Countries

M. Van Hout, Z. Demetrovics, S. Henriques, 2017, International Journal of Mental Health and Addiction.

Why do people use new psychoactive substances? Development of a new measurement tool in six European countries

M. Van Hout, Z. Demetrovics, R. Urbán, 2020, Journal of psychopharmacology.

The challenges and benefits of analyzing feedback comments in surveys: Lessons from a cross-national online survey of small-scale cannabis growers

Aili Malm, Pekka Hakkarainen, Tom Decorte, 2019, Methodological Innovations.

How and Where to Find NPS Users: a Comparison of Methods in a Cross-National Survey Among Three Groups of Current Users of New Psychoactive Substances in Europe

K. Felvinczi, D. Korf, A. Benschop, 2019, International Journal of Mental Health and Addiction.

The transparency paradox. Building trust, resolving disputes and optimising logistics on conventional and online drugs markets.

Meropi Tzanetakis, Bernd Werse, Gerrit Kamphausen, 2016, The International journal on drug policy.

Discriminative Characteristics of Marginalised Novel Psychoactive Users: a Transnational Study

M. Van Hout, Z. Demetrovics, R. Urbán, 2019, International Journal of Mental Health and Addiction.