1. D. M. Hawkins, Identification of Outliers, Springer, (1980).
2. E. M. Knox, R. T. Ng, Algorithms for mining distancebased outliers in large datasets, Proceedings of the international conference on very large data bases, Citeseer, 1998,392-403. Available from: https://dl.acm.org/doi/10.5555/645924.671334.
3. X. Wang, X. L. Wang, M. Wilkes, A fast distance-based outlier detection technique, Industrial Conference on Data Mining-Poster and Workshop, 2008, 25-44. Available from: https://www.researchgate.net/publication/26621806 A Fast DistanceBased Algorithm to Detect Outliers.
4. M. Sugiyama, K. Borgwardt, Rapid distance-based outlier detection via sampling, Advances in Neural Information Processing Systems, 2013,467-475. Available from: http://papers.nips.cc/paper/5127-rapid-distance-based-outlier-detection-via-sampling.
5. Z. He, X. Xu, S. Deng, Discovering cluster-based local outliers, Pattern Recognit. Lett., 24 (2003), 1641-1650.