Younes, M. A., Nicaise, L. A. and Bertrand, M. (2016) “Polymerization Degree of Phytochelatin in Contaminated Soil Phytoremediation of Manganese in Hibiscus Sabdariffa Linn Var Sabdariffa”, European Scientific Journal, ESJ, 12(33), p. 482. doi: 10.19044/esj.2016.v12n33p482.