D. Makarov, and R. Uklein. (2012)cite arxiv:1204.5406Comment: 17 pages, 6 figures, 2 tables, to be published in Astrophysical Bulletin 67, p.123 (2012).
G. Zhu, и B. Ménard. (2013)cite arxiv:1304.0451Comment: 10 pages, 9 figures, 2 tables. submitted to ApJ. Introduction includes a review of Fraunhofer's line labeling. Comments are welcome.