Magnetic diffusivities in 3D radiative chemo-hydrodynamic simulations of protostellar collapse Natalia Dzyurkevich, Benoît Commerçon, Pierre Lesaffre and Dimitry Semenov A&A, 603 (2017) A105 Published online: 18 July 2017 DOI: 10.1051/0004-6361/201628995