TY CONF TI PREDICTION OF STABILITY OF DESIGNED ARTIFICIAL BEACHES BY MATHEMATICAL MODEL APPROACHES KW modeal approashes JO XXIV International Coastal Conference "SEA COASTS – EVOLUTION, ECOLOGY, ECONOMY" AU Kuklev, S.B. AU Divinskiy, B.V. AU Divinskaya, E.V. PY 2024 PB Academus Publishing