Mohamed, A., Rahman, M., Alsadon, A. and Islam, R. (2009) “Accumulation of Proline in NaCl-treated Callus of Six Tomato (Lycopersicon esculentum Mill.) Cultivars”, Plant Tissue Culture and Biotechnology, 17(2), pp. 217–220. doi: 10.3329/ptcb.v17i2.3242.