MATLAB: Where to find documentation for old releases

documentationolddocs

Starting from yesterday of grand upgrading to R2012b, I could not find even documentations for R2012a (online way), which I am currently learning at.
Tried google, MathlabCentral, everything.
Can someone please help.
Thanks,

Best Answer

mathworks.com -> Support -> Documentation Center
and right under the funny "R2012b" there is a line "Installation | Release Notes | Other Releases" so click on Other Releases to reach http://www.mathworks.com/help/doc-archives.html