1. Inhibition of dihydrofolic reductase by aminopterin and amethopterin;Osborn,1958
2. Changes of molecular properties associated with the development of resistance against methotrexate in human lymphoblastoid cells;Niethammer;Europ. J. Cancer,1975
3. Transport of folate compounds through the membrane of human lymphoblastoid cells;Niethammer,1975
4. Some molecular characteristics of methotrexate resistance in human lymphoblastoid cells;Niethammer,1976
5. Quantitative aspects of methotrexate binding by L1210 dihydrofolate reductase;Rothenberg,1976