http://bg.wikipedia.org/wiki/%D0%A0%...BD%D0%B8%D1%8F
http://foresty.hit.bg/
http://www.omda.bg/bulg/priroda/endemiti.html
http://bio.topvisia.net/joomla/index...=93&Itemid=111
http://uk.geocities.com/boriana70/xo...nts/plants.htm