[OR1a] N. Tadić and H. Zimmermann, “Optical receiver with widely tunable sensitivity in BiCMOS technology”, IEEE Transactions on Circuits and Systems, part I: Regular Papers, vol. 55, pp. 1223-1236, June 2008.
[OR1b] N. Tadić and H. Zimmermann, “Low-power BiCMOS optical receiver with voltage-controlled transimpedance”, IEEE Journal of Solid-State Circuits, vol. 42, pp. 613-626, March 2007.
[OR1c] N. Tadić and H. Zimmermann, “Highly linear BiCMOS optical receiver with voltage-controlled sensitivity”, Electronics Letters, vol. 42, no. 2, pp. 116-117, 19th January 2006.