*[http://humanresources.web.cern.ch/humanresources/external/training/tech/special/FEED2002/FEED-2002_10Dec02.ppt Multivariable systems, Matrices] | *[http://humanresources.web.cern.ch/humanresources/external/training/tech/special/FEED2002/FEED-2002_10Dec02.ppt Multivariable systems, Matrices] |