Multidimensional supernova simulations with approximative neutrino transport - I. Neutron star kicks and the anisotropy of neutrino-driven explosions in two spatial dimensionsL. Scheck, K. Kifonidis, H.-Th. Janka and E. MüllerA&A, 457 3 (2006) 963-986DOI: https://doi.org/10.1051/0004-6361:20064855