David Lojo David E. Losada Alvaro Barreiro CIE-9-MC Code Classification with knn and SVM. 499-508 2009 IWINAC (2) https://doi.org/10.1007/978-3-642-02267-8_53 https://www.wikidata.org/entity/Q62039276 conf/iwinac/2009-2 db/conf/iwinac/iwinac2009-2.html#LojoLB09