Titov, D. V., Markiewicz, W. J., Ignatiev, N. I., Song, L., Limaye, S. S., Sanchez-Lavega, A., et al. (2012). Morphology of the cloud tops as observed by the Venus Express Monitoring Camera. Icarus, 217(2), 682-701. doi:10.1016/j.icarus.2011.06.020.