TY JOUR TI OPTIMIZATION OF ORTHOTROPIC FIBER-GLASS TRAVERSE-RIBBED SHELLS KW optimization KW fiber-glass shells KW strength KW buckling KW refined theory of equations derivation JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Kuznecova, S.V. AU Van'kova, T.E. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov