Reference impact safe levels (RISL) of pollutants in air of working zone. Amendment No. 3 to hygienic normatives "Reference impact safe levels (RISL) of harmful substances in occupational air: GN 2.2.5.687-98"
Maximum permissible levels (MPL) for pollution of process equipment surfaces by O-(1,2,2 trimethylpropyl) of methilfluorophosphonate (soman) and O-isopropylmethylfluorinephosphonate (sarin)