KRAJMEROVÁ, Diana et al. Natural hybridization in eastern-Mediterranean firs: the case of Abies borisii-regis. In Plant biosystems : an international journal dealing with all aspects of plant biology. ISSN 1126-3504, 2016, vol. 150, no. 6, p. 1189-1199. APVV-SK-BG-0029-10 ; VEGA 1/0218/12 ; DNTS-SK 01/6. CCC, WOS, SCOPUS.