1. Johnson R. E., J. F. Cooper, and L. J. Lanzerotti 1986, in Proc. 20th ESLAB Symposium on the Exploration of Halley’s Comet, Heidelberg, 27–37 October 1986, pp. 269–271. ESA SP-250 (December 1986).
2. Meisels G. G. 1965, J. Amer. Chem. Soc. 87, 950–957.
3. Sack N. J. 1989 ‘On the importance of radical density in cosmic chemistry’, submitted to Earth, Moon, and Planets.
4. Sack N. J., R. Schuster, and A. Hofmann 1989 ‘Current density effects and the importance of charge transfer processes in the radiolysis of methane - astrophysical implications’, submitted to The Astrophys. J.
5. Woodward T. W., and R. A. Back 1963, in the γ- radiolysis of hydrocarbon gases, Can. J. Chem. 41, 1463–1468.