Sander L. J. Gierkink, Robert C. Frye, Vito Boccuzzi. Differentially "bathtub"-tuned CMOS VCO using inductively coupled varactors. In José E. Franca, Rudolf Koch, editors, ESSCIRC 2003 - 29th European Solid-State Circuits Conference, Estoril, Portugal, September 16-18, 2003. pages 501-504, IEEE, 2003. [doi]
Abstract is missing.