BikeStage 2022 – Radon Deft: Potente E-Enduro-Neuheit im Test – eMTB-News.de
Ventilation effect on indoor radon–thoron levels in dwellings and correlation with soil exhalation rates - R. P. Chauhan, Amit Kumar, Neetika Chauhan, Manish Joshi, Praveen Aggarwal, B. K. Sahoo, 2016