Origin of emission from square-shaped organic microlasers S. Bittner, C. Lafargue, I. Gozhyk, N. Djellali, L. Milliet, D. T. Hickox-Young, C. Ulysse, D. Bouche, R. Dubertrand, E. Bogomolny et al. (2 more) EPL, 113 5 (2016) 54002 Published online: 31 March 2016 DOI: 10.1209/0295-5075/113/54002