Vozniuk, M., Pis’mennyi, E., Terekh, A., Baranyuk, A. and Kondratyuk, V. 2020. Flow structure definition in the bundles of flat-oval tubes with incomplete finning under conditions of natural draft. Eastern-European Journal of Enterprise Technologies. 5, 8 (107) (Oct. 2020), 74–79. DOI:https://doi.org/10.15587/1729-4061.2020.214712.