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Harris JD, Hibler DW, Fontenot GK, Hsu KT, Yurewicz EC, Sacco AG (Mar 1995). "Cloning and characterization of zona pellucida genes and cDNAs from a variety of mammalian species: the ZPA, ZPB and ZPC gene families". DNA Sequence. 4 (6): 361–93. doi:10.3109/10425179409010186. PMID7841460.
Avilés M, Moros C, García-Vázquez FA, Gimeno L, Torrecillas A, Aliaga C, Bernardo-Pisa MV, Ballesta J, Izquierdo-Rico MJ (April 2015). "Four glycoproteins are expressed in the cat zona pellucida". Theriogenology. 83 (7): 1162–73. doi:10.1016/j.theriogenology.2014.12.019. PMID25623231.
Harris JD, Hibler DW, Fontenot GK, Hsu KT, Yurewicz EC, Sacco AG (Mar 1995). "Cloning and characterization of zona pellucida genes and cDNAs from a variety of mammalian species: the ZPA, ZPB and ZPC gene families". DNA Sequence. 4 (6): 361–93. doi:10.3109/10425179409010186. PMID7841460.