求助格式: 【序号】:DOI: 10.3109/03639048709068677 【作者】:G. Ragnarsson a; A. Sandberg a; U. E. Jonsson a; J. Sjgren a 【题名】:Development of A New Controlled Release Metoprolol Product 【期刊】:Drug Development and Industrial Pharmacy, 【年、卷、期、起止页码】:1987 , Volume 13, Issue 9 - 11 pages 1495 - 1509 【全文链接】:http://www.informaworld.com/smpp/ftinterface~content=a786496716~fulltext=713240930