Here is info on their paper
Sagan, C. & E.E. Salpeter, “Particles, Environments and Possible Ecologies in the Jovian Atmosphere,†Ap.J. Suppl. 32, 737 (1976)
The Science Channel has a clip from the Cosmos episode
showing the Jovian life:
http://science.discovery.com/convergence/cosmos/videogallery/videogallery.html?clik=fsmain_feat1
