Michael J. Mueller Ulrich Weiss Tobias Webel Luiz C. Alves William J. Clarke Markus Straßer Eberhard Engler Giovanni Cautillo Harm Osterndorf Joerg Schulze Fully redundant clock generation and distribution with dynamic oscillator switchover. 145-156 2007 51 IBM Journal of Research and Development 1/2 http://dx.doi.org/10.1147/rd.511.0145 db/journals/ibmrd/ibmrd51.html#MuellerWWACSECOS07