TY JOUR TI METHOD FOR DETERMINING THE OPTIMAL HEIGHT OF THE GAS ANALYZER FOR SMALL LEAKS OF HYDROGEN-CONTAINING GAS KW hydrogen KW hydrogen-containing gas KW gas analyzer KW concentration KW optimum height of location KW small leaks JO NATURAL AND MAN-MADE RISKS (PHYSICO-MATHEMATICAL AND APPLIED ASPECTS) AU Rebezov, S.A. AU Timoshenko, A.L. PY 2024 IS 2024 PB Saint-Petersburg University of State Fire Service of Emercom of Russia