Balancing benefits and limitations of linear energy transfer optimization in carbon ion radiotherapy for large sacral chordomas oleh Giovanni Parrella, Giuseppe Magro, Agnieszka Chalaszczyk, Marco Rotondi, Mario Ciocca, Lars Glimelius, Maria R. Fiore, Chiara Paganelli, Ester Orlandi, Silvia Molinelli, Guido Baroni