References
- Silverman , L. , Fitzgerald , J. J. , Burgess , W. A. , Corn , M. and Stein , F. 1960 . Respiratory Protective Equipment , Boston, Massachusetts : Harvard School of Public Health . Progress Report for June 1959 to April 1960, NYO-9322.
- Hounam , R. F. 1962 . A Method for Evaluating the Protection Afforded When Wearing a Respirator , Harwell, , England : Atomic Energy Research Establishment . AERE-R-4125
- Hounam , R. F. , Moroan , D. J. , O'Connor , D. T. and Sherwood , R. J. 1964 . The Evaluation of Protection Provided by Respirators . Ann. Occup. Hyg. , 7 : 353