An improved SPICE model for high-frequency noise of BJTs and HBTs. - Uwe Zillmann; Frank Herzel (IEEE J. Solid State Circuits, 1996)

Programmable spread spectrum clock generation based on successive phase selection technique. - Ruchir Saraswat; Uwe Zillmann; Supriyanto Supriyanto; Guido Droege; Ulrich Bretthauer (ISCAS, 2008)