Trouble with Science Direct

Please be aware that ScienceDirect is experiencing some hiccups today, and some of the full text pdf copies are not available.  This has been reported upstairs, but they're not sure yet when it will be back to normal.  You'll probably see this message at the top when trying to access ScienceDirect:

ScienceDirect is currently experiencing a technical issue within our User Registration service whereby access to this piece of content is temporarily denied. We are working to restore this service as soon as possible and apologize for this inconvenience!