@article{articlef1b0e855,
title   = {String-averaging expectation-maximization for maximum likelihood estimation in emission tomography},
author = {Helou, Elias Salomão and Censor, Yair and Chen, Tai-Been and Chern, I-Liang and Pierro, Álvaro Rodolfo De and Jiang, Ming and Shing Lu, Henry Horng},
year = {2014},
doi = {10.1088/0266-5611/30/5/055003},
journal   = {Inverse Problems : An International Journal of Inverse Problems, Inverse Methods and Computerised Inversion of Data}
}