References
- Marshall , C. P. 1990 . PCM Filter Rejection Policies Differ . Asbestos Issues , 3 ( 10 ) : 16 – 18 .
- Cherrie , J. , Jones , A. and Johnston , A. 1986 . The Influence of Fiber Density on the Assessment of Fiber Concentration Using the Membrane Filter Method . Am. Ind. Hyg. Assoc. J. , 47 : 465 – 74 .