R-banding pattern of the prometaphase chromosomes of the domestic sheep Ovis aries L D. Di Berardino, M.B. Lioi, C. Miranda, A. Di Milia, M.G. D'Agostino and D. Matassino Genet. Sel. Evol., 21 1 (1989) 1-10 DOI: 10.1051/gse:19890101