Dadashpour, Ahmad, A.R. Talaie, M.A. Askari-Sarcheshmeh, and A. Gharaghani. 2019. “Influence of Two Training Systems on Growth, Yield and Fruit Attributes of Four Apple Cultivars Grafted onto ‘M.9’ Rootstock”. Advances in Horticultural Science 33 (3):313-20. https://doi.org/10.13128/ahs-23353.