KORMUŤÁK, Andrej et al. Artificial hybridization of some Abies species. In Plant systematics and evolution. ISSN 0378-2697, 2013, vol. 299, issue 6, p. 1175-1184. VEGA 2/0110/13 ; KONTAKT ME 914 ; COST ACTION FP1106. CCC, WOS, SCOPUS.