Redirect Notice
 The previous page is sending you to https://www.sciencedirect.com/science/article/pii/0034666788900772/pdf?md5=49d2b78a12777bfe948a358735beff64&pid=1-s2.0-0034666788900772-main.pdf.

 If you do not want to visit that page, you can return to the previous page.