Duthaler, Rudolf O., et al. “In Vivo Neutralization of Naturally Existing Antibodies Against Linear α(1,3)-Galactosidic Carbohydrate Epitopes by Multivalent Antigen Presentation: A Solution for the First Hurdle of Pig-to-Human Xenotransplantation”. CHIMIA, vol. 64, no. 1-2, Feb. 2010, p. 23, doi:10.2533/chimia.2010.23.