Substance use in a comparative perspective : the case of Bulgaria, Czechia, Croatia, Romania and Slovakia. 1st ed. Prague : Karolinum, 2011. 1 online zdroj (273 s.). Available on Internet: <https://ebookcentral.proquest.com/lib/ujep-ebooks/detail.action?docID=2012907> <http://toc.nkp.cz/NKC/201106/contents/nkc20112181189_1.pdf> ISBN 978-80-246-2338-2.