1. Bird, M. K., Huchtmeier, W. K., von Kap-Herr, A., Schmidt, J., & Walmsley, C. M. 1987, in Cometary Radio Astronomy, ed. W. M. Irvine, F. P. Schloerb, & L. E. Tacconi-Garman (Green Bank, WV, National Radio Astronomy Observatory), 85
2. Bird, M. K., Hatchell, J., van der Tak, F. F. S., Crovisier, J., & Bockelée-Morvan, D. 2002, in Proceedings of Asteroids, Comets, Meteors – ACM 2002, ed. B. Warmbein, ESA SP-500, 697
3. Radio wavelength molecular observations of comets C/1999 T1 (McNaught-Hartley), C/2001 A2 (LINEAR), C/2000 WM1(LINEAR) and 153P/Ikeya-Zhang