Year	2014
Authors	Henry Horng-Shing Lu ,Helou, E. S., Censor, Y., Chen. T. B., Chen, I-L., De Pierro, A.
Paper Title	String-Averaging Expectation-Maximization for Maximum Likelihood Estimation in Emission Tomography
Journal Title	Inverse Problems, 2014, 30 055003. (SCI)
Reference URL	http://iopscience.iop.org/0266-5611/30/5/055003/