Bentley, R. A.; Bostock, G. J.; Longson, D. J.; Roff, M. W.
view article (10.004545)
Determination of the Quantitative Fit Factors of Various Types of Respiratory Protective Equipment.
Health and Safety Executive, Sheffield, England
Journal of the International Society for Respiratory Protection,
Vol. 2,
No. 4,
323-337,
1984