Downs, and L.S. Ettre. Extraneous peaks in gas chromatography; their source and elimination Chromatographia. 8:605-16(1975).Purcell, J. E., Downs, H. D., Ettre, L. S. (1975) Extraneous Peaks in Gas Chromatography, Their Source and Elimination. Chromatographia 8: pp. 605-605...