Eberhard Hansis Dirk Schäfer Olaf Dössel Michael Grass Evaluation of Iterative Sparse Object Reconstruction From Few Projections for 3-D Rotational Coronary Angiography. 1548-1555 2008 27 IEEE Trans. Med. Imaging 11 http://dx.doi.org/10.1109/TMI.2008.2006514 db/journals/tmi/tmi27.html#HansisSDG08