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Magnani, JL (15 June 2004). "The discovery, biology, and drug development of sialyl Lea and sialyl Lex". Archives of Biochemistry and Biophysics. 426 (2): 122–31. doi:10.1016/j.abb.2004.04.008. PMID15158662.
Goonetilleke KS, Siriwardena AK (April 2007). "Systematic review of carbohydrate antigen (CA19-9) as a biochemical marker in the diagnosis of pancreatic cancer". Eur J Surg Oncol. 33 (3): 266–70. doi:10.1016/j.ejso.2006.10.004. PMID17097848.
Magnani, JL (15 June 2004). "The discovery, biology, and drug development of sialyl Lea and sialyl Lex". Archives of Biochemistry and Biophysics. 426 (2): 122–31. doi:10.1016/j.abb.2004.04.008. PMID15158662.