Kim, B., Kitagawa, H., Tamura, J., Saito, T., Kusche-Gullberg, M., Lindahl, U., & Sugahara, K. (2001). Human tumor suppressor EXT gene family members EXTL1 and EXTL3 encode α1,4- N-acetylglucosaminyltransferases that likely are involved in heparan sulfate/ heparin biosynthesis. The National Academy of Sciences.

Kim, Byung-Taek, Hiroshi Kitagawa, Jun-ichi Tamura, Toshiyuki Saito, Marion Kusche-Gullberg, Ulf Lindahl, and Kazuyuki Sugahara. Human Tumor Suppressor EXT Gene Family Members EXTL1 and EXTL3 Encode α1,4- N-acetylglucosaminyltransferases That Likely Are Involved in Heparan Sulfate/ Heparin Biosynthesis. The National Academy of Sciences, 2001.

Kim, Byung-Taek, et al. Human Tumor Suppressor EXT Gene Family Members EXTL1 and EXTL3 Encode α1,4- N-acetylglucosaminyltransferases That Likely Are Involved in Heparan Sulfate/ Heparin Biosynthesis. The National Academy of Sciences, 2001.