Eden Chlamtac, Ishay Haviv. Linear index coding via semidefinite programming. In Yuval Rabani, editor, Proceedings of the Twenty-Third Annual ACM-SIAM Symposium on Discrete Algorithms, SODA 2012, Kyoto, Japan, January 17-19, 2012. pages 406-419, SIAM, 2012. [doi]
Abstract is missing.