13.
Molnar A, Magoon R, Hatcher G, Zachan J, Rhee W, Damgaard M, Domino W, Vakilian N. A single-chip QUAD-BAND (850/900/1800/1900 Mhz) Direct-conversion GSM/GPRS RF transceiver with INTEGRATED VCOS and fractional-N synthesizer. 2002 IEEE International Solid-State Circuits Conference. Digest of Technical Papers (Cat. No.02CH37315).