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Cawthorne, TV, Stirling, AM, Gabuzda, DC and Jorstad, S (2003) Discovery of a precessing jet nozzle in BL Lacertae. Monthly Notices of the Royal Astronomical Society, 341 (2). pp. 405-422. ISSN 0035-8711
Cawthorne, TV, Gabuzda, DC and Hutchison, JM (2001) Parsec-scale polarization of the jet in quasar 4C 71.07. Monthly Notices of the Royal Astronomical Society, 321 (3). pp. 525-536. ISSN 0035-8711