31 Jul 1997
First HF radar measurements of summer mesopause echoes at SURA
A. N. Karashtin, Y. V. Shlyugaev, V. I. Abramov, I. F. Belov, I. V. Berezin, V. V. Bychkov, E. B. Eryshev, and G. P. Komrakov
Ann. Geophys., 15, 935–941, https://doi.org/10.1007/s00585-997-0935-z,https://doi.org/10.1007/s00585-997-0935-z, 1997