Use this if you are using igraph from R
| make_full_citation_graph {igraph} | R Documentation | 
make_full_citation_graph creates a full citation graph. This is a
directed graph, where every i->j edge is present if and only if
j<i. If directed=FALSE then the graph is just a full graph.
make_full_citation_graph(n, directed = TRUE)
full_citation_graph(...)
| n | The number of vertices. | 
| directed | Whether to create a directed graph. | 
| ... | Passed to  | 
An igraph graph.
Other deterministic constructors: 
graph_from_atlas(),
graph_from_edgelist(),
graph_from_literal(),
make_chordal_ring(),
make_empty_graph(),
make_full_graph(),
make_graph(),
make_lattice(),
make_ring(),
make_star(),
make_tree()
print_all(make_full_citation_graph(10))