This file has been used in:
Pellets-Kessel: Nutzungsgrad oft zu niedrig (in german). https://www.energie-bau.at/. energie:bau (2011-01-31). Retrieved on 2020-03-25. |
This file has been used in:
Willie Scott. A Look at Wood Pellet Stove Ratings (in english). brighthub.com. Retrieved on 2020-03-25. |