Mao Bao-Lin, Chen Xiao-Zhao, Xiao Da-Yu, Fan Sheng-Yu, Teng Yue-Yang, Kang Yan. Ordered subset image reconstruction studied by means of total variation minimization and fast first-order method in low dose computed tomograhpyJ. Acta Physica Sinica, 2014, 63(13): 138701. DOI: 10.7498/aps.63.138701