Cell Transformation by Different Forms of Polyoma Virus DNA Crawford, Lionel ; Dulbecco, Renato ; Fried, Mike ; Montagnier, Luc ; Stoker, Michael Abstract Publication: Proceedings of the National Academy of Science Pub Date: July 1964 DOI: 10.1073/pnas.52.1.148 Bibcode: 1964PNAS...52..148C