The sky distribution of positronium annihilation continuum emission measured with SPI/INTEGRAL
G. Weidenspointner, C. R. Shrader, J. Knödlseder, P. Jean, V. Lonjou, N. Guessoum, R. Diehl, W. Gillard, M. J. Harris, G. K. Skinner, P. von Ballmoos, G. Vedrenne, J.-P. Roques, S. Schanne, P. Sizun, B. J. Teegarden, V. Schönfelder and C. Winkler
A&A, 450 3 (2006) 1013-1021
DOI: https://doi.org/10.1051/0004-6361:20054046
