Dhruva Ghai Saraju P. Mohanty Elias Kougianos Parasitic Aware Process Variation Tolerant Voltage Controlled Oscillator (VCO) Design. 330-333 2008 ISQED http://doi.ieeecomputersociety.org/10.1109/ISQED.2008.12 conf/isqed/2008 db/conf/isqed/isqed2008.html#GhaiMK08a