2Russell R. Manufacturing execution systems moving to the next level[ J ]. Pharmaceutical Technology, 2004,28 ( 6 ) : 38.
3Clellan M M. Execution systems: The heart of intelligent manufacturing[ J ]. Intelligent Enterprise, 2004, (7) : 33.
4Adler D J, Herkamp J. Does a manufacturing execution system reduce the cost of production for bulk pharmaceuticals [ J ]. ISA Transactions, 1995,34:21.
