The previous page is sending you to https://www.sciencedirect.com/science/article/pii/S0065229608600919/pdf?md5=f54cb73acb1943bdc2b4fb0dfd99b346&pid=1-s2.0-S0065229608600919-main.pdf&_valck=1.

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