“Extraction of Copper(II)From Sulphates Phase Using O,O Diphenyl [(E)-2-Cyano-1-Methylvinyl] Amido Phosphate and O,O Diphenyl [(E)-2-Cyano-1-Methylvinyl]Amido Thio Phosphate In Methane Dichloride”. 2019. Latakia University Journal -Basic Sciences Series 39 (3). https://journal.latakia-univ.edu.sy/index.php/bassnc/article/view/3736.