Bishop DF, Henderson AS, Astrin KH (xuño de 1990). "Human delta-aminolevulinate synthase: assignment of the housekeeping gene to 3p21 and the erythroid-specific gene to the X chromosome". Genomics7 (2): 207–14. PMID2347585. doi:10.1016/0888-7543(90)90542-3.
Bishop DF, Henderson AS, Astrin KH (xuño de 1990). "Human delta-aminolevulinate synthase: assignment of the housekeeping gene to 3p21 and the erythroid-specific gene to the X chromosome". Genomics7 (2): 207–14. PMID2347585. doi:10.1016/0888-7543(90)90542-3.