History of venus observations

Bonnet, R. M., Grinspoon, D., & Rossi, A. P. (2013). History of venus observations. In Towards Understanding the Climate of Venus: Applications of Terrestrial Models to Our Sister Planet (Vol. 11, pp. 7–16). Springer New York. https://doi.org/10.1007/978-1-4614-5064-1_2