Nüsslein-Volhard C, Wieschaus E (1980). "Mutations affecting segment number and polarity in Drosophila". Nature287 (5785): 795–801. PMID6776413. doi:10.1038/287795a0.
Lawrence PA, Johnston P, Macdonald P, Struhl G (1987). "Borders of parasegments in Drosophila embryos are delimited by the fushi tarazu and even-skipped genes". Nature328 (6129): 440–2. PMID2886916. doi:10.1038/328440a0.
Nüsslein-Volhard C, Wieschaus E (1980). "Mutations affecting segment number and polarity in Drosophila". Nature287 (5785): 795–801. PMID6776413. doi:10.1038/287795a0.
Lawrence PA, Johnston P, Macdonald P, Struhl G (1987). "Borders of parasegments in Drosophila embryos are delimited by the fushi tarazu and even-skipped genes". Nature328 (6129): 440–2. PMID2886916. doi:10.1038/328440a0.