Helt-Hansen, Jakob, Flemming Rosendal, Inger Matilde Kofoed, and Claus Erik Andersen. 2009. “Medical Reference Dosimetry Using EPR Measurements of Alanine: Development of an Improved Method for Clinical Dose Levels”. Acta Oncologica 48 (2):216-22. https://doi.org/10.1080/02841860802279725.