Girardi, A. J., Reppucci, P., Dierlam, P., Rutala, W., & Coggin, J. H. (1973). Prevention of Simian Virus 40 Tumors by Hamster Fetal Tissue: Influence of Parity Status of Donor Females on Immunogenicity of Fetal Tissue and on Immune Cell Cytotoxicity.

Girardi, Anthony J., Phyllis Reppucci, Peggy Dierlam, William Rutala, ja Joseph H. Coggin. Prevention of Simian Virus 40 Tumors By Hamster Fetal Tissue: Influence of Parity Status of Donor Females On Immunogenicity of Fetal Tissue and On Immune Cell Cytotoxicity. 1973.

Girardi, Anthony J., et al. Prevention of Simian Virus 40 Tumors By Hamster Fetal Tissue: Influence of Parity Status of Donor Females On Immunogenicity of Fetal Tissue and On Immune Cell Cytotoxicity. 1973.