Gu J, Yuasa H, Hayashi Y, Watanabe J (August 1998). "First-pass metabolism of 5-fluorouracil in the perfused rat small intestine". Biological & Pharmaceutical Bulletin. 21 (8): 871–873. doi:10.1248/bpb.21.871. PMID9743260.
Yuasa H, Gu J, Hayashi Y, Watanabe J (September 1998). "First-pass metabolism of 5-fluorouracil in rats". The Journal of Pharmacy and Pharmacology. 50 (9): 1019–1025. doi:10.1111/j.2042-7158.1998.tb06917.x. PMID9811163.
Watanabe T, Sano M, Takashima S, Kitaya T, Tokuda Y, Yoshimoto M, et al. (March 2009). "Oral uracil and tegafur compared with classic cyclophosphamide, methotrexate, fluorouracil as postoperative chemotherapy in patients with node-negative, high-risk breast cancer: National Surgical Adjuvant Study for Breast Cancer 01 Trial". Journal of Clinical Oncology. 27 (9): 1368–1374. doi:10.1200/JCO.2008.18.3939. PMID19204202.
Gu J, Yuasa H, Hayashi Y, Watanabe J (August 1998). "First-pass metabolism of 5-fluorouracil in the perfused rat small intestine". Biological & Pharmaceutical Bulletin. 21 (8): 871–873. doi:10.1248/bpb.21.871. PMID9743260.
Yuasa H, Gu J, Hayashi Y, Watanabe J (September 1998). "First-pass metabolism of 5-fluorouracil in rats". The Journal of Pharmacy and Pharmacology. 50 (9): 1019–1025. doi:10.1111/j.2042-7158.1998.tb06917.x. PMID9811163.
Watanabe T, Sano M, Takashima S, Kitaya T, Tokuda Y, Yoshimoto M, et al. (March 2009). "Oral uracil and tegafur compared with classic cyclophosphamide, methotrexate, fluorouracil as postoperative chemotherapy in patients with node-negative, high-risk breast cancer: National Surgical Adjuvant Study for Breast Cancer 01 Trial". Journal of Clinical Oncology. 27 (9): 1368–1374. doi:10.1200/JCO.2008.18.3939. PMID19204202.