Magnetic field dependence of singlet exciton fission and fluorescence in crystalline tetracene at 300 K H. Bouchriha, V. Ern, J.L. Fave, C. Guthmann et M. Schott J. Phys. France, 39 3 (1978) 257-271 DOI: 10.1051/jphys:01978003903025700