High-LET radiotherapy for adenoid cystic carcinoma of the head and neck: 15 years’ experience with raster-scanned carbon ion therapy - Jensen, Alexandra; Jäkel, Oliver; Huber, Peter E.; Debus, Jürgen; Nikoghosyan, Anna; Welzel, Thomas; Uhl, Matthias; Federspil, Philippe A.; Freier, Kolja; Krauß, Jürgen; Höss, Angelika; Haberer, Thomas (Radiotherapy and oncology, 2016)