Pion Production from Proton Synchrotron Radiation under Strong Magnetic Field in a Relativistic Quantum ApproachTomoyuki Maruyama, Myung-Ki Cheoun, Toshitaka Kajino and Grant J. MathewsEPJ Web of Conferences, 122 (2016) 04003DOI: https://doi.org/10.1051/epjconf/201612204003