↑ Cox, M. (2004). Lehninger, Principles of Biochemistry. Freeman. p. 1100. ISBN0-71674339-6. Unknown parameter |coauthors= ignored (|author= suggested) (help)
↑ Linhardt RJ, Gunay NS. (1999). "Production and Chemical Processing of Low Molecular Weight Heparins". Sem. Thromb. Hem. 3: 5–16. PMID10549711.
↑ Marcum JA, McKenney JB.; และคณะ (1986). "Anticoagulantly active heparin-like molecules from mast cell-deficient mice". Am. J. Physiol. 250 (5 Pt 2): H879–888. PMID3706560. Explicit use of et al. in: |author= (help)
↑ Nader, HB; และคณะ (1999). "Heparan sulfates and heparins: similar compounds performing the same functions in vertebrates and invertebrates?". Braz. J. Med. Biol. Res. 32 (5): 529–538. doi:10.1590/S0100-879X1999000500005. PMID10412563. Explicit use of et al. in: |author= (help)
