Tkachenko , M. 2023. Structural Changes in Ceramic Carbonized Hydroxyapatite as a Result of Long-Term Storage at Room Temperature. Journal of V. N. Karazin Kharkiv National University. Series Physics. 38 (May 2023), 15-20. DOI:https://doi.org/10.26565/2222-5617-2023-38-02.