TY JOUR TI REDUCING THE RISK OF OCCURRENCE OF DEFECTS OF LAUNCHER METAL COATING OF ROCKET-SPACE COMPLEXES KW JO Problems of risk management in the technosphere AU Gula, D.N. AU Spesivtsev, A.V. AU Vagin, A.V. PY 2017 IS 2017 PB Saint-Petersburg University of State Fire Service of Emercom of Russia