Probing the eccentricity in protostellar discs: Modelling kinematics and morphologies Enrico Ragusa, Elliot Lynch, Guillaume Laibe, Cristiano Longarini and Simone Ceppi A&A, 686 (2024) A264 Published online: 21 June 2024 DOI: 10.1051/0004-6361/202449583