Sylovanyuk V, Didukh A. Healing of penny-shaped crack in material with functional gradient structure. Dopov. Nac. akad. nauk Ukr. [Internet]. 2026 Oct. 29 [cited 2026 Nov. 10];(5):40-6. Available from: https://nasu-periodicals.org.ua/index.php/dp/article/view/30154