Kurtenkov, Oleg, et al. “Natural IgM and IgG Antibodies to Thomsen-Friedenreich (T) Antigen in Serum of Patients With Gastric Cancer and Blood Donors: Relation to Lewis (a,b) Histo-Blood Group Phenotype”. Acta Oncologica, vol. 38, no. 7, Jan. 1999, pp. 939-43, doi:10.1080/028418699432626.