Wang YK, Samos CH, Peoples R, Perez-Jurado LA, Nusse R, Francke U (1997). „A novel human homologue of the Drosophila frizzled wnt receptor gene binds wingless protein and is in the Williams syndrome deletion at 7q11.23”. Hum Mol Genet. 6 (3): 465—72. PMID9147651. doi:10.1093/hmg/6.3.465.
Wang YK, Sporle R, Paperna T, Schughart K, Francke U (1999). „Characterization and expression pattern of the frizzled gene Fzd9, the mouse homolog of FZD9 which is deleted in Williams-Beuren syndrome”. Genomics. 57 (2): 235—48. PMID10198163. doi:10.1006/geno.1999.5773.
Wang YK, Samos CH, Peoples R, Perez-Jurado LA, Nusse R, Francke U (1997). „A novel human homologue of the Drosophila frizzled wnt receptor gene binds wingless protein and is in the Williams syndrome deletion at 7q11.23”. Hum Mol Genet. 6 (3): 465—72. PMID9147651. doi:10.1093/hmg/6.3.465.
Wang YK, Sporle R, Paperna T, Schughart K, Francke U (1999). „Characterization and expression pattern of the frizzled gene Fzd9, the mouse homolog of FZD9 which is deleted in Williams-Beuren syndrome”. Genomics. 57 (2): 235—48. PMID10198163. doi:10.1006/geno.1999.5773.