The dense and non-homogeneous circumstellar medium revealed in radio wavelengths around the Type Ib SN 2019oysI. Sfaradi, A. Horesh, J. Sollerman, R. Fender, L. Rhodes, D. R. A. Williams, J. Bright, D. A. Green, S. Schulze and A. Gal-YamA&A, 686 (2024) A129DOI: https://doi.org/10.1051/0004-6361/202348761