@inbook{ GAMELLA_ALVAREZ:48-60,

author = { JUAN FRANCISCO GAMELLA MORA and ARTURO ALVAREZ ROLDAN } ,

title = { Feasibility study on developing a Drug Early Warning System in Spain },

booktitle = { DETECTING, TRACKING AND UNDERSTANDING EMERGING TRENDS IN DRUG USE },

isbn = { 84-89582-21-1 },

publisher = { NATIONAL ADDICTION CENTRE },

pages = { 48 - 60 },

year = { 1999 },

}