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https://www.aanda.org/articles/aa/full_html/2022/03/aa41649-21/aa41649-21.html Zeeman-Doppler imaging of five young solar-type stars | Astronomy & Astrophysics (A&A) zeeman doppler imaging https://www.aanda.org/articles/aa/abs/2022/03/aa41649-21/aa41649-21.html Zeeman-Doppler imaging of five young solar-type stars | Astronomy & Astrophysics (A&A) zeeman doppler imaging https://www.aanda.org/articles/aa/abs/2019/05/aa34906-18/aa34906-18.html Warm and cool starspots with opposite polarities - A high-resolution Zeeman-Doppler-Imaging study... warm and cool