Abdullayev, J.S., Ibragimova, M.S., Abdullayev, J.S. and Sapaev, I.B. 2026. Thermal Expansion Characteristics of Planar and Radial Si/GaAs p–n Heterojunctions. East European Journal of Physics. 1 (Mar. 2026), 388-395. DOI:https://doi.org/10.26565/2312-4334-2026-1-46.