Martin, A.F. et al. 2012. The Effect of Increase in NaCl Concentration on Growth and Proline Content of Purple Yam (Dioscorea alata L.) Grown In Vitro. Annales Bogorienses. 16, 2 (Dec. 2012), 13–18. DOI:https://doi.org/10.14203/ann.bogor.2012.v16.n2.13-18.