GHIDRA, Vasile, Marin ARDELEAN, Radu E. SESTRAS, Elena TAMAS, Mirela CORDEA, Mariana DEJEU, Lucia COSTIN, and Agnes BORS. “Architectural Ideotype of Pear Seedling in Five Hybrid Combinations”. Notulae Botanicae Horti Agrobotanici Cluj-Napoca 28, no. 1 (August 5, 1998): 49-52. Accessed June 6, 2020. https://www.notulaebotanicae.ro/index.php/nbha/article/view/330.