1. Bailey J. C. and Viney N. J. (1979). “Gas Chromatographic Investigation of Odors at a Sewage Treatment Works.” Water Research Centre Technical Report TR125 Stevenage UK.
2. Davidson M. J. and Duffy P. M. Neighbourhood Tolerance of Sewage Treatment Plants . Thesis presented to the Univ. of Queensland at Brisbane in 1976 in partial fulfillment of the requirements for the degree of Bachelor of Engineering.
3. Dravnieks A. and Jarke F. H. (1979). “Odor Threshold Measurement by Dynamic Olfactometry.” Proceedings 72nd Annual Meeting Air Poll. Control Assoc. Cincinnati OH.