Jinks, Timothy Morgan, Gretchen Calhoun, and Paul Schedl. (2003) 2003. “Functional Conservation of the Sex-Lethal Sex Determining Promoter, Sxl-Pe, in Drosophila Virilis.”. Dev Genes Evol 213 (4): 155-65. doi:10.1007/s00427-003-0304-1.