Jegorowa, A., J. Górski, J. Kurek, and M. Kruk. “Use of Nearest Neighbors (k–nn) Algorithm in Tool Condition Identification in the Case of Drilling in Melamine Faced Particleboard”. Maderas. Ciencia Y Tecnología, vol. 22, no. 2, Apr. 2020, pp. 189-96, https://revistas.ubiobio.cl/index.php/MCT/article/view/3955.