1. Digraphs
2. Bondy, J.A. and Murty, U.S.R. (2008) Graph Theory, Springer, Ber-lin.
3. Pendant tree-connectivity
4. Li, S., Li, W. and Li, X. (2012) The Generalized Connectivity of Complete Bipartite Graphs, Ars Combinatoria, 104, 65-79.
5. Generalized Connectivity of Graphs