White, N. K., Bonner, P. H., Nelson, D. R., & Hauschka, S. D. (1975). Clonal analysis of vertebrate myogenesis. IV. Medium-dependent classification of colony-forming cells. Developmental Biology, 44(2), 346-61. Retrieved de http://linkinghub.elsevier.com/retrieve/pii/0012-1606(75)90405-4 (Original work published 1975 Jun C.E.)