Autor:	Kasabadzhakova, Stoyanka Kostadinova
Zdroj:	Годишник - Висше училище по сигурност и икономика / Yearbook - Higher School of Security and Economics. X(1):48-62
Databáze:	Central and Eastern European Online Library (CEEOL)
Externí odkaz:	https://www.ceeol.com/search/article-detail?id=1099443 Zobrazit plný text záznamu