Kriege, Nils, Petra Mutzel, and Till Schäfer. “Practical SAHN Clustering for Very Large Data Sets and Expensive Distance Metrics”. Journal of Graph Algorithms and Applications 18, no. 4 (December 1, 2014): 577–602. Accessed May 6, 2025. https://jgaa-v4.cs.brown.edu/index.php/jgaa/article/view/paper338.