GOST 13637.1-1977 Gallium. Spectral method for the determination of aluminium, iron, bismuth, silicon, magnesium, manganese, copper, nickel, tin, lead and chromium
1993GOST 13637.1-1993 Gallium. Atomic-emission method for the determination of aluminium, iron, bismuth, silicon, magnesium, manganese, copper, nickel, tin, lead, chromium and zinc
1977GOST 13637.1-1977 Gallium. Spectral method for the determination of aluminium, iron, bismuth, silicon, magnesium, manganese, copper, nickel, tin, lead and chromium