M. Ibrahim, M. Shafique, M. Helali, M. Rahman, S. Biswas, and M. Islam, “Studies on the Physiological and Biochemical Composition of Different ber (<i>Zizyphus mauritiana</i> Lamk.) Cultivars at Rajshahi”, Bangladesh J. Sci. Ind. Res., vol. 44, no. 2, pp. 229–232, Nov. 2009.