Histogram Families for Color-Based Retrieval in Image Databases. - Carlo Colombo; Alessandro Rizzi; Ivan Genovesi (ICIAP (2), 1997)

Interactive Image Retrieval by Color Distributions. - Carlo Colombo; Alberto Del Bimbo; Ivan Genovesi (ICMCS, 1998)

Interactive image retrieval by color distribution content. - Carlo Colombo; Alberto Del Bimbo; Ivan Genovesi (Integr. Comput. Aided Eng., 2000)