graph, RBGL, igraph, combinat, Rgraphviz
graph, RBGL, igraph (>= 0.5.5-1), combinat, Rgraphviz
graph, RBGL, igraph (>= 0.5.5-1), combinat, Rgraphviz, Rmpfr
graph, RBGL, igraph (>= 0.5.5-1), combinat, Rmpfr