Khan WN, Teglund S, Bremer K, Hammarstrom S (May 1992). "The pregnancy-specific glycoprotein family of the immunoglobulin superfamily: identification of new members and estimation of family size". Genomics. 12 (4): 780–7. doi:10.1016/0888-7543(92)90309-G. PMID1572651.
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ncbi.nlm.nih.gov
"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
Khan WN, Teglund S, Bremer K, Hammarstrom S (May 1992). "The pregnancy-specific glycoprotein family of the immunoglobulin superfamily: identification of new members and estimation of family size". Genomics. 12 (4): 780–7. doi:10.1016/0888-7543(92)90309-G. PMID1572651.