Survey of Ecstasy consumption in the UK - Ecstasy (MDMA, MDA, MDEA, MBDB) consumption, seizures, related offences, prices, dosage levels and deaths in the UK (1994-2003) by Fabrizio Schifano, John Corkery, Paolo Deluca, Adenekan Oyefeso, A. Hamid Ghodse. Journal of Psychopharmacology, Vol. 20, No. 3, 456-463 (2006), DOI: 10.1177/0269881106060147 (PDF)
Recreational ecstasy use does not cause depression. - 'Recreational ecstasy use and depression' by Casey Guillot, David Greenway. Journal of Psychopharmacology, Vol. 20, No. 3, 411-416 (2006), DOI: 10.1177/0269881106063265
