Naoyuki Kamiyama, Naoki Katoh, Atsushi Takizawa. Arc-disjoint in-trees in directed graphs. In Shang-Hua Teng, editor, Proceedings of the Nineteenth Annual ACM-SIAM Symposium on Discrete Algorithms, SODA 2008, San Francisco, California, USA, January 20-22, 2008. pages 518-526, SIAM, 2008. [doi]
Abstract is missing.