Hirka, G., Prakash, K., Kawashima, H., Plotkin, S. A., Andrews, P. W., & Gönczöl, E. (1991). Differentiation of human embryonal carcinoma cells induces human immunodeficiency virus permissiveness which is stimulated by human cytomegalovirus coinfection. J Virol.

Hirka, G., K. Prakash, H. Kawashima, S A. Plotkin, P W. Andrews, and E. Gönczöl. "Differentiation of Human Embryonal Carcinoma Cells Induces Human Immunodeficiency Virus Permissiveness Which Is Stimulated By Human Cytomegalovirus Coinfection." J Virol 1991.

Hirka, G., et al. "Differentiation of Human Embryonal Carcinoma Cells Induces Human Immunodeficiency Virus Permissiveness Which Is Stimulated By Human Cytomegalovirus Coinfection." J Virol 1991.