Bacon, N. C.; Wappner, P; O'Rourke, J. F.; Bartlett, S. M.; Shilo, B; Pugh, C. W.; Ratcliffe, P. J. Regulation of the Drosophila bHLH-PAS protein Sima by hypoxia: Functional evidence for homology with mammalian HIF-1 alpha. Biochemical and Biophysical Research Communications. 1998, 249 (3): 811–6. PMID 9731218. doi:10.1006/bbrc.1998.9234.
Bacon, N. C.; Wappner, P; O'Rourke, J. F.; Bartlett, S. M.; Shilo, B; Pugh, C. W.; Ratcliffe, P. J. Regulation of the Drosophila bHLH-PAS protein Sima by hypoxia: Functional evidence for homology with mammalian HIF-1 alpha. Biochemical and Biophysical Research Communications. 1998, 249 (3): 811–6. PMID 9731218. doi:10.1006/bbrc.1998.9234.