1. Parameterized algorithms for directed maximum leaf problems;Alon,2007
2. Better algorithms and bounds for directed maximum leaf problems;Alon,2007
3. Spanning directed trees with many leaves;Alon;SIAM J. Discrete Math.,2009
4. Bipartite Graphs and Their Applications;Asratian,1998
5. Digraphs: Theory, Algorithms and Applications;Bang-Jensen,2000