The previous page is sending you to https://www.sciencedirect.com/science/article/pii/S0953756296800815/pdf?md5=8ec15b3b7da1f4800c3275b3c064bb54&pid=1-s2.0-S0953756296800815-main.pdf&_valck=1.

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