Comet C/2013 r1 (lovejoy)K. Kadota, G. V. Williams, M. Tombelli et al.|Central Bureau Electronic Telegrams|2013Cited by 4
Comet C/2019 a9 (panstarrs)A. Novichonok, S. M. Larson, M. Micheli et al.|Minor Planet Electronic Circulars|2019Cited by 0