Pennell, S., Manktelow, E., Flatt, A., Kelly, G., Smerdon, S. J., & Brierley, I. (2008). The stimulatory RNA of the Visna-Maedi retrovirus ribosomal frameshifting signal is an unusual pseudoknot with an interstem element. Cold Spring Harbor Laboratory Press.

Pennell, Simon, Emily Manktelow, Andrew Flatt, Geoff Kelly, Stephen J. Smerdon, and Ian Brierley. The Stimulatory RNA of the Visna-Maedi Retrovirus Ribosomal Frameshifting Signal Is an Unusual Pseudoknot With an Interstem Element. Cold Spring Harbor Laboratory Press, 2008.

Pennell, Simon, et al. The Stimulatory RNA of the Visna-Maedi Retrovirus Ribosomal Frameshifting Signal Is an Unusual Pseudoknot With an Interstem Element. Cold Spring Harbor Laboratory Press, 2008.