Kuryshchuk, S., Kovalyuk, T., Koziarskyi, I. and Solovan, M. (2022) “Structural, Electrical and Optical Properties of Graphite Films are Drawn with Pencils of Different Hardness”, East European Journal of Physics, (3), pp. 91-96. doi: 10.26565/2312-4334-2022-3-12.