The spectroscopic binaries 21 Her and γ GemH. Lehmann, S. M. Andrievsky, I. Egorova, G. Hildebrandt, S. A. Korotin, K. P. Panov, G. Scholz and D. SchönbernerA&A, 383 2 (2002) 558-567DOI: https://doi.org/10.1051/0004-6361:20011746
