Fomin VN, Aynabayev AA, Aldabergenova SK, Kaykenov DA, Turovets MA. Classification Analysis of Bituminous Coals Using a Combination of GC-MS and Chemometric Methods. Eurasian j. chem. [Internet]. 2026 May 5 [cited 2026 May 22];. Available from: https://ejc.buketov.edu.kz/ejc/article/view/670