1. Solution of the matrix equation ax + xb=c [f4];Bartels;Communications of the ACM,1972
2. S. Bengio, F. Pereira, Y. Singer, D. Strelow, Group sparse coding, in: NIPS, 2009, pp. 90–98.
3. The segmented and annotated IAPR TC-12 benchmark;Escalante;Computer Vision and Image Understanding,2010
4. W. Fei, H. Yahong, T. Qi, Z. Yueting, Multi-label boosting for image annotation by structural grouping sparsity, in: ACM Multimedia, 2010.
5. C. Galleguillos, A. Rabinovich, S. Belongie, Object categorization using co-occurrence, location and appearance, in: CVPR, 2008, pp. 1–8.