@article{spallicci:insu-01579590, TITLE = {{Comment on ``Acceleration of particles to high energy via gravitational repulsion in the Schwarzschild field'' [Astropart. Phys. 86 (2017) 18--20]}}, AUTHOR = {Spallicci, Alessandro D. A. M.}, URL = {https://insu.hal.science/insu-01579590}, JOURNAL = {{Astroparticle Physics}}, PUBLISHER = {{Elsevier}}, VOLUME = {94}, PAGES = {42-43}, YEAR = {2017}, DOI = {10.1016/j.astropartphys.2017.08.002}, KEYWORDS = {Free fall ; Geodesics ; Cosmic rays ; Black holes ; Repulsion}, PDF = {https://insu.hal.science/insu-01579590/file/1708.00799%281%29.pdf}, HAL_ID = {insu-01579590}, HAL_VERSION = {v1}, }