Al-Zuhairi, E., & 		Ghanm, N.
2019 Mar 16.  Effect of BA, NAA, Methyl Jasmonate and Mannitol on Callus Induction of Periwinkle Plant (Catharanthus roseus L. cv. Heatwave Mix) by In Vitro Culture. Tikrit Journal for Agricultural Sciences مجلة تكريت للعلوم الزراعية. [Online] 18:4