Geider, Klaus Emeritus Group Biophysics, Max Planck Institute for Medical Research, Max Planck Society;
https://www.pnas.org/content/pnas/75/2/645.full.pdf (Any fulltext)
https://doi.org/10.1073/pnas.75.2.645 (Any fulltext)
Geider, K., Beck, E., & Schaller, H. (1978). An RNA transcribed from DNA at the origin of phage fd single strand to replicative form conversion. Proceedings of the National Academy of Sciences of the United States of America, 75(2), 645-649. doi:10.1073/pnas.75.2.645.