1. Alpen, E. L., Nature 184:1228 (1959).
2. BORSOOK, H, A DISCUSSION OF HUMORAL ERYTHROPOIETIC FACTORS, ANNALS OF THE NEW YORK ACADEMY OF SCIENCES 77: 725 (1959).
3. BRUCE, W.R., COMPARISON OF SENSITIVITY OF NORMAL HEMATOPOIETIC AND TRANSPLANTED LYMPHOMA COLONY-FORMING CELLS TO TRITIATED THYMIDINE, JOURNAL OF THE NATIONAL CANCER INSTITUTE 34: 849 (1965).
4. BULLOUGH, W.S., MITOTIC AND FUNCTIONAL HOMEOSTASIS - A SPECULATIVE REVIEW, CANCER RESEARCH 25: 1683 (1965).
5. CONGDON, C. C., PROGRESS IN HEMATOLOGY 2: 21 (1959).