Ionization and fragmentation of fluorene upon 250 keV proton impactChandan Bagdia, Shubhadeep Biswas, Anuvab Mandal, Shamik Bhattacharjee and Lokesh C. TribediEur. Phys. J. D, 75 1 (2021) 37DOI: https://doi.org/10.1140/epjd/s10053-020-00001-7