Getoff, N., Solar, S., Richter, U.-B., & Haenel, M. W. (2003). Pulse radiolysis of pyrene in aprotic polar organic solvents: simultaneous formation of pyrene radical cations and radical anions. Radiation Physics and Chemistry, 66(3), 207-214. doi:10.1016/S0969-806X(02)00392-4.