Gupta, Radhey S.; Chan, David Y.H.; Siminovitch, Louis (1978). “Evidence for functional hemizygosity at the Emtr locus in CHO cells through segregation analysis”. Cell (Elsevier BV) 14 (4): 1007–1013. doi:10.1016/0092-8674(78)90354-9. ISSN0092-8674.
Gupta, Radhey S.; Chan, David Y.H.; Siminovitch, Louis (1978). “Evidence for functional hemizygosity at the Emtr locus in CHO cells through segregation analysis”. Cell (Elsevier BV) 14 (4): 1007–1013. doi:10.1016/0092-8674(78)90354-9. ISSN0092-8674.