Redirect Notice
The previous page is sending you to
https://www.sciencedirect.com/science/article/pii/S0007153653800574/pdf?md5=ee863e0386e178d9c5430dc0e0455863&pid=1-s2.0-S0007153653800574-main.pdf
.
If you do not want to visit that page, you can
return to the previous page
.