The following three papers deal with the results of the Khartoum eclipse.
Temperature gradients in the chronosphere; Some characteristics of a chromospheric model; A model of the chromosphere from the helium and continuum emissions
1955-08-22
R. G. Athay R. N. Thomas D. H. Menzel
archival document
Sun--Research
Gordon A. Newkirk, Jr. Papers
https://aspace.archives.ucar.edu/repositories/2/resources/35
Copyright University Corporation for Atmospheric Research (UCAR). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
http://n2t.net/ark:/85065/d7nc5zf4