| title | ISBN-13 (ISBN-10)  | year of publica- tion  | other author(s) | 
|---|---|---|---|
| Chemical, Microbiological, Health and Comfort Aspects of Indoor Air Quality - State of the Art in SBS | 978-0-7923-1703-6 (0-7923-1703-3)  | 1992 | Peder Wolkoff | 
| Determination of Vocs Emitted from Indoor Materials and Products: Second Interlaboratory Comparison of Small Chamber Measurements | 978-92-827-4272-3 (92-827-4272-5)  | 1995 | Maurizio De Bartoli · Stylianos Kephalopoulos | 
Helmut Knabel · Helmut Knebl · Helmut Knepel · Helmut. Knobel · Helmut Knüppel