Bøker og avhandlinger
Melberg, Hans Olav
(2005)
Costs and benefits of treating drug users. Essays on selection bias: contagious drug use, the gateway hypothesis and the concept of social cost. Avhandling
Moan, Inger Synnøve
(2005)
Smoking or not smoking. How well does the theory of planned behaviour predict intention and behaviour? Avhandling