Comparative Sequence Analysis of the Imprinted Dlk1–Gtl2 Locus in Three Mammalian Species Reveals Highly Conserved Genomic Elements and Refines Comparison with the Igf2–H19 Region - Paulsen, Martina; Takada, Shuji; Youngson, Neil A.; Benchaib, Mehdi; Charlier, Carole; Segers, Karin; Georges, Michel; Ferguson-Smith, Anne C. (Genome Research, 2001)