Aaron St. Leger Juan C. Jimenez Agung Fu Sanal Djimbinov Sa Em Soeurn Sun Sit Lwin Chika O. Nwankpa Analog Emulation of a Reconfigurable Tap Changing Transformer. 73-76 2007 conf/iscas/2007 ISCAS http://doi.ieeecomputersociety.org/10.1109/ISCAS.2007.378185 db/conf/iscas/iscas2007.html#LegerJFDSLN07