Exploring the relativistic regime with Newtonian hydrodynamics: an improved effective gravitational potential for supernova simulationsA. Marek, H. Dimmelmeier, H.-Th. Janka, E. Müller and R. BurasA&A, 445 1 (2006) 273-289DOI: https://doi.org/10.1051/0004-6361:20052840