Analysis of Trans-Neptunian and Centaur colours: continuous trend or grouping?M. A. Barucci, M. Fulchignoni, M. Birlan, A. Doressoundiram, J. Romon and H. BoehnhardtA&A, 371 3 (2001) 1150-1154DOI: https://doi.org/10.1051/0004-6361:20010501
