E. Aliu, G. Maier, J. H. Buckley et al.|Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields|2012
E. Aliu, G. Maier, S. Archambault et al.|Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields|2015