TY CONF TI Wolf–Rayet stars mass-loss rates determined from spectroscopic measurements of the orbital evolution for close WR+OB binary systems KW stars: Wolf–Rayet KW mass-loss KW winds KW outflows KW binaries: spectroscopic JO Modern astronomy: from the Early Universe to exoplanets and black holes AU Shaposhnikov, I.. PY 2024 PB Special Astrophysical Observatory of the Russian Academy of Sciences