http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&arnumber=641138&queryText%3D.QT.Preventive+maintenance.QT..PLS..QT.transformer.QT.%26openedRefinements%3D*%26rowsPerPage%3D100%26searchField%3DSearch+All
Detecting aging by-products of SF6 using quadrupole mass spectrometry
This paper...