References
- SOBERMAN, R. K., et al., 1963, Smithsonian Contri-butions to Astrophysics, Vol. 7, p. 89.
- HEMENWAY, C. L, ., SOBERMAN, R. K, and WITT,G ., 1964, Sampling of noctilucent cloud particles, Tellus, Vol. 16, pp. 84–88.
- B. Electron-microscopic Studies of Noctilucent Cloud Particles, by C. L. HEMENWAEY., F. FULLAM, R. A. SKRIVANEK. R. K. SOBERMAN and G. WITT. Tellus, 16, 1.
- C. Composition Analysis of Noctilucent Cloud Particles, by G. WITT, C. L. HEMENWAY, N. LANGE, S. MODIN and R. K. SOBERMAN. Tellua, 16, I.
- D. Calcium Film Indicator of Moisture Associated with Noctilucent Cloud Particles, by I. LIN-SCOTT, C. L. HEMENWAY and G. WITT. Tellus, 16, I.
- E. Simulation of Ring Patterns observed with Noctilucent Cloud Particles, by R. A. SKRIVA-NEK and R. K. SOBERMAN. Tellus, 16, I.