Antti Heiskanen Timo Rahkonen 5th order electro-thermal multi-tone Volterra simulator with component-level output. 612-615 2003 ISCAS (4) http://dx.doi.org/10.1109/ISCAS.2003.1206156 db/conf/iscas/iscas2003-4.html#HeiskanenR03