M. SEDGHI, A. GHOLIPOURI, and R. S. SHARIFI, “Gama-Tocopherol Accumulation and Floral Differentiation of Medicinal Pumpkin (Cucurbita pepo L.) in Response to Plant Growth Regulators”, Not Bot Horti Agrobo, vol. 36, no. 1, pp. 80–84, Jun. 2008.