Ambipolar diffusion: Self-similar solutions and MHD code testing - Cylindrical symmetry F. Moreno-Insertis, D. Nóbrega-Siverio, E. R. Priest and A. W. Hood A&A, 662 (2022) A42 Published online: 10 June 2022 DOI: 10.1051/0004-6361/202141449