References
- CHARLSON, R. J., 1965, Noctilucent clouds. A steady state model. Quart. J. Roy. Met. Soc.
- HERIENWAY, C. L., SOBERMAN, R. K., and WITT, G. et al., A series of five papers in Tellug, 16, pp. 84–117.
- WITT, G. 1965, Personal communication, at Torsta, Sweden, August 1965.