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2. https://machinelearningmastery.com/radius-neighbors-classifier-algorithm-with-python/.
3. https://chrisalbon.com/machine_learning/nearest_neighbors/radius_based_nearest_neighbor_classifier/.
4. https://ogrisel.github.io/scikit-learn.org/sklearn- tutorial/modules/generated/sklearn.neighbors.RadiusNeighborsClassifier.html.
5. Amandeep Kaur, Prabhjeet Kaur, Breast cancer detection and classification using analysis and gene-back proportional neural network algorithm, Int. J. Innov. Technol. Explor. Eng. (IJITEE) ISSN: 2278-3075, 8(8) 2019.