Pushkareva, Y.N., Titova, N.P., Yurchenko, O.I. and Kholin, Y.V. 2012. Classification of chemical analytical data with the use of a combination of the Kohonen and the probabilistic neural networks. Kharkiv University Bulletin. Chemical Series. 21 (Dec. 2012), 212-217. DOI:https://doi.org/10.26565/2220-637X-2012-21-20.