The Nonferrous Metals Society of China
Selectively leaching Cu(Ⅱ) and Ni(Ⅱ) from acid mine drainage sludge by using 
ethylenediamine-ammonium sulfate
LIDe-liang(李德良),WANGDian-zuo(王淀佐),JAFinch
Transactions of Nonferrous Metals Society of China . 2002, (06): 1176 -1179 .