Springel, Volker Cosmology, MPI for Astrophysics, Max Planck Society;
Agertz, O., Moore, B., Stadel, J., Potter, D., Miniati, F., Read, J., et al. (2007). Fundamental differences between SPH and grid methods. Monthly Notices of the Royal Astronomical Society, 380(3), 963-978. doi:10.1111/j.1365-2966.2007.12183.x.