SESTRAS, R. E., M. ARDELEAN, C. BOTEZ, V. GHIDRA, V. BUCARCIUC, I. CHIS, and A. BARBOS. “GCA and SCA Effects for Ramification Capacity of Trees in F1 Apple Seedlings”. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, vol. 32, no. 1, Aug. 2004, pp. 43-47, doi:10.15835/nbha321188.