Jorge R. Fernandes, Michiel H. L. Kouwenhoven, Chris van den Bos, Luís B. Oliveira, Chris J. M. Verhoeven. The Effect of Mismatches and Delay on the Quadrature Error of a Cross-Coupled Relaxation Oscillator. IEEE Trans. on Circuits and Systems, 54-I(12):2592-2598, 2007. [doi]
Abstract is missing.