1. Aldman, B., Balldin, U., Gustafsson, H., Nygren, Å., Sporrong, A., Åstrand, I., 1981 Carbon dioxide retention inside motor-cycle helmets. In: IRCOBI, pp. 128–37. Salon-de-Provence (France).
2. Effect of Moderate Hypoxia and Hypercapnia on Ventilation at Rest and During Exercise;Andik;Acta Physiol. Acad. Scientiarum Hung.,1969
3. Working in permanent hypoxia for fire protection-impact on health;Angerer;Int. Arch. Occup. Environ. Health,2003
4. Injury patterns associated with mortality following motorcycle crashes;Ankarath;Injury-Int. J. Care Inj.,2002
5. Heated, perspiring manikin headform for the measurement of headgear ventilation characteristics;Brühwiler;Meas. Sci. Technol.,2003