Kassym, R., Balgynbek, T., Serikov, T., Ahmetova, P., Sergazin, G., Ozhikenov, K., Sultangaziyev, T., Kumar, P., Tlenshiyeva, A. and Yernazarov, N. 2024. Development a novel design of miniaturized heptagonal Koch fractal wide band antenna for 5G mm wave and IoT applications. Eastern-European Journal of Enterprise Technologies. 3, 5 (129) (Jun. 2024), 6–14. DOI:https://doi.org/10.15587/1729-4061.2024.306712.