Determination of Nine Penicillin Residues in Milk and Milk Powder by HPLC-MS/MS
CHEN Rui-chun，JIA Hai-tao，AI Lian-feng，GUO Chun-hai
FOOD SCIENCE . 2011, (18): 249 -252 .  DOI: 10.7506/spkx1002-6630-201118055