<sod><ref>[http://accelconf.web.cern.ch/accelconf/e00/PAPERS/MOP5A04.pdf circumference deformation]{{rs|date=August 2014}}</ref><eod>
<sod><ref>[http://accelconf.web.cern.ch/accelconf/e00/PAPERS/MOP5A04.pdf circumference deformation]{{unreliable source?|date=August 2014}}</ref><eod>