Authors: Emma C Teeling; Ole Madsen; Ronald A Van den Bussche; Wilfried W de Jong; Michael J Stanhope; Mark S Springer Journal: Proc Natl Acad Sci U S A Date: 2002-01-22 Impact factor: 11.205
Authors: Mark S Springer; Robert W Meredith; Jan E Janecka; William J Murphy Journal: Philos Trans R Soc Lond B Biol Sci Date: 2011-09-12 Impact factor: 6.237