Use of `bibliography`

Citations with xreftext: [1], [2].

Citations without xreftext (ID only): [Freeman1977].

References

[1] Brandes, Ulrik. "A faster algorithm for betweenness centrality." Journal of mathematical sociology 25, no. 2 (2001): 163-177. https://snap.stanford.edu/class/cs224w-readings/brandes01centrality.pdf.
[2] Brandes, Ulrik, and Christian Pich. "Centrality estimation in large networks." International Journal of Bifurcation and Chaos 17, no. 07 (2007): 2303-2318. https://www.uni-konstanz.de/mmsp/pubsys/publishedFiles/BrPi07.pdf.
[Freeman1977] Freeman, Linton C. "A set of measures of centrality based on betweenness." Sociometry (1977): 35-41.