Becker AJ; McCulloch EA; Till JE (1963). »Cytological demonstration of the clonal nature of spleen colonies derived from transplanted mouse marrow cells«. Nature. 197 (4866): 452–4. doi:10.1038/197452a0. PMID13970094.
Siminovitch L; McCulloch EA; Till JE (1963). »The distribution of colony-forming cells among spleen colonies«. Journal of Cellular and Comparative Physiology. 62 (3): 327–36. doi:10.1002/jcp.1030620313. PMID14086156.
Becker AJ; McCulloch EA; Till JE (1963). »Cytological demonstration of the clonal nature of spleen colonies derived from transplanted mouse marrow cells«. Nature. 197 (4866): 452–4. doi:10.1038/197452a0. PMID13970094.
Siminovitch L; McCulloch EA; Till JE (1963). »The distribution of colony-forming cells among spleen colonies«. Journal of Cellular and Comparative Physiology. 62 (3): 327–36. doi:10.1002/jcp.1030620313. PMID14086156.