Read more here: Antaki M, Renaud MA, Morcos M, Seuntjens J, Enger SA. Applying the column generation
method to the intensity modulated high dose rate brachytherapy inverse planning problem.
Phys Med Biol. 2023 Mar 13;68(6). doi: 10.1088/1361-6560/acbc63. PMID: 36791469.