Schneider U, Schwenk H, Bornkamm G (1977). «Characterization of EBV-genome negative "null" and "T" cell lines derived from children with acute lymphoblastic leukemia and leukemic transformed non-Hodgkin lymphoma». Int J Cancer19 (5): 621-6. PMID68013. doi:10.1002/ijc.2910190505.
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ncbi.nlm.nih.gov
Schneider U, Schwenk H, Bornkamm G (1977). «Characterization of EBV-genome negative "null" and "T" cell lines derived from children with acute lymphoblastic leukemia and leukemic transformed non-Hodgkin lymphoma». Int J Cancer19 (5): 621-6. PMID68013. doi:10.1002/ijc.2910190505.