Open the article, then click on "Link Pickup" icon in the top right corner of the First Search page (see image below).
After clicking on "Link Pickup", you should see the screen below. Use the link below the "IP-address recognition URL… "as your stable link. If the URL already includes proxy1.cl.msu.edu or proxy2.cl.msu.edu in the string, you do not need to do anything further. This is your stable link. If the link does not already include the proxy1 or proxy2 string in the URL, then add the EZproxy string, http://ezproxy.msu.edu/login?url=, in front of it.