TY CONF TI Retorspective Analysis of the Sustainability of Artificially Restored Beaches of the Gulf of Gagra KW sediment KW artificial restoration of beaches KW Buna KW coast protection KW Gagra Bay JO XXVII International Shore Conference (Arctic Coast: The Path to Sustainability) AU Dbar, R.S. AU Zhiba, R.Y. PY 2024 PB Academus Publishing