Reference
- 1958 . Tentative Method of Test for Oxides of Nitrogen in Gaseous Combustion Products (Phenol-disulfonic Acid Procedure). American Society for Testing Materials: ASTM Method D-1608–58 .
- 1959–1961 . Los Angeles County Air Pollution Control District: A Joint Project: Emissions of Oxides of Nitrogen From Stationary Sources in Los Angeles County. Reports 1, 2, 3 and 4. .