• NASA: Let's Explore Venus in Solar Zeppelins and Build a Cloud City http://sacd.larc.nasa.gov/branches/space-mission-analysis-branch-smab/smab-projects/havoc/ 2 comments 21/12/2014

• Why a manned mission to Venus is our best bet for exploration https://sacd.larc.nasa.gov/smab/havoc/ 9 comments 25/10/2018 science