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 June 30, 2024. https://jgaa.info/index.php/jgaa/article/view/paper338.