Khusain, B., Khussainova, A., Ismailova, J., Delikesheva, D., Brodskiy, A., Sass, A., Kenessary, A., Tyulebayeva, R., Sarsenova, A., Darzhokov, T. and Samigatova, S. 2025. Grouping and Characterisation of Heavy Hydrocarbon Fractions for Phase Bahavior Modeling of Kazakhstani Reservoir Fluids. Engineering, Technology & Applied Science Research. 15, 6 (Dec. 2025), 29263–29269. DOI:https://doi.org/10.48084/etasr.12959.