杂志名称:  Harvard Business Review Article文献名称: Ad Spending: Maintaining Market Share作者: by John Philip Jones 出版日期:  6 pages.  Publication date: Jan 01, 1990. Prod. #: 90108-PDF-ENG

连接:http://hbr.org/product/ad-spendi ... re/an/90108-PDF-ENG

另外,这个连接也可以:http://www.ncbi.nlm.nih.gov/pubmed/10106403

谢谢!!!