Spectroscopic long-term monitoring of RZ Cas - I. Basic stellar and system parameters H. Lehmann, A. Dervişoğlu, D. E. Mkrtichian, F. Pertermann, A. Tkachenko and V. Tsymbal A&A, 644 (2020) A121 Published online: 10 December 2020 DOI: 10.1051/0004-6361/202039355