Petersson, Kristoffer, Per Nilsson, Per Engström, Tommy Knöös, and Crister Ceberg. 2015. “ CrossRef Citations to Date 0 Altmetric Listen Letter Multi-Modality Optimisation in Radiotherapy Treatment Planning Using Composite Objective Values”. Acta Oncologica 54 (4):557-61. https://doi.org/10.3109/0284186X.2014.953255.