Bulletin of the University of Agricultural Sciences & Veterinary Medicine Cluj-Napoca. Agriculture; 2010, Vol. 67 Issue 1, p221-225, 5p, 1 Chart, 4 Graphs
Bulletin of the University of Agricultural Sciences & Veterinary Medicine Cluj-Napoca. Agriculture; 2009, Vol. 66 Issue 1, p323-326, 4p, 3 Color Photographs, 1 Chart