Full Citation: Kasting, J. F., Whitmire, D. P., & Reynolds, R. T. (1993). Habitable Zones around Main Sequence Stars. Icarus, 101, 108-128.URL: http://www3.geosc.psu.edu/~jfk4/PersonalPage/Pdf/Icarus_93.pdf VPL Research Tasks: Task C: The Habitable Planet