Gap Strings and Spanning Forests for Bridge Graphs of Biconnected Graphs.

Peter W. Stephens Gap Strings and Spanning Forests for Bridge Graphs of Biconnected Graphs. 125-145 1996 69 Discrete Applied Mathematics 1-2 http://dx.doi.org/10.1016/0166-218X(95)00080-B db/journals/dam/dam69.html#Stephens96