P. F. Proenca et al., "Good appearance and shape descriptors for object category recognition", in Advances in visual computing: 9th Int. Symp., ISVC 2013, Proc., George Bebis, Richard Boyle, Bahram Parvin, Darko Koracin, Baoxin Li, Fatih Porikli, Victor Zordan, James Klosowski, Sabine Coquillart, Xun Luo, Min Chen, David Gotz, Ed., Crete, Springer, 2013, vol. 8033, pp. 385-394