Huennekens FM (1994). "The methotrexate story: a paradigm for development of cancer chemotherapeutic agents". Advances in Enzyme Regulation. 34: 397–419. doi:10.1016/0065-2571(94)90025-6. PMID7942284.
Huennekens FM (1994). "The methotrexate story: a paradigm for development of cancer chemotherapeutic agents". Advances in Enzyme Regulation. 34: 397–419. doi:10.1016/0065-2571(94)90025-6. PMID7942284.