“Surface Vibrations in Semi-Infinite Chains with Consideration of Long-Range Interaction. Surface Vibrations in Cubic Crystals”, East Eur. J. Phys., no. 1041(2), pp. 29–48, Feb. 2013, Accessed: Oct. 25, 2026. Available: https://periodicals.karazin.ua/eejp/article/view/13095