Citation
Belyaeva, E.S., Zhimulev, I.F. (1982). Cytogenetic analysis of the X chromosome region 2B3-4-2B11 of Drosophila melanogaster. IV. Mutation of the swi (singed wings) locus interfering with the late 20-OH ecdysone puff system. Chromosoma 86(2): 251--263.