A. Peil

Quantitative Determination of Terpenes Emitted by Conifers

H. Schauenburg, H. Vissers, H. Knöppel, 1982 .

Organic micropollutants in air and water. Sampling, gas chromatographic-mass spectrometric analysis and computer identification.

H. Schauenburg, H. Vissers, H. Knöppel, 1976, Journal of chromatography.

Reproducibility of temperature-programmed gas chromatographic retention indices with non-polar glass capillary columns

H. Vissers, H. Knöppel, M. D. Bortoli, 1983 .

The Determination of Linear PTGC Retention Indices for Use in Environmental Organics Analysis

H. Schauenburg, H. Vissers, H. Knöppel, 1982 .

Concentrations of selected organic pollutants in indoor and outdoor air in Northern Italy

H. Schlitt, H. Knöppel, H. Schauenburg, 1986 .