Becker AJ, McCulloch EA, Till JE (1963). "Cytological demonstration of the clonal nature of spleen colonies derived from transplanted mouse marrow cells". Nature197: 452–4. doi:10.1038/197452a0. பப்மெட்:13970094.
Siminovitch L, McCulloch EA, Till JE (1963). "The distribution of colony-forming cells among spleen colonies". Journal of Cellular and Comparative Physiology62: 327–36. doi:10.1002/jcp.1030620313. பப்மெட்:14086156.
Becker AJ, McCulloch EA, Till JE (1963). "Cytological demonstration of the clonal nature of spleen colonies derived from transplanted mouse marrow cells". Nature197: 452–4. doi:10.1038/197452a0. பப்மெட்:13970094.
Siminovitch L, McCulloch EA, Till JE (1963). "The distribution of colony-forming cells among spleen colonies". Journal of Cellular and Comparative Physiology62: 327–36. doi:10.1002/jcp.1030620313. பப்மெட்:14086156.