Redirect Notice
The previous page is sending you to
https://www.sciencedirect.com/science/article/pii/S0953756209813051/pdf?md5=de994a82cdff11052796187d9f5d4114&pid=1-s2.0-S0953756209813051-main.pdf
.
If you do not want to visit that page, you can
return to the previous page
.