K. M Allan, E Murphy and J. G. Ayres
Occupational Medicine 60 ( 6 ): 458 - 463 , 2010
S Semple, M van Tongeren, K. S Galea, L Maccalman, I Gee, O Parry, A Naji and J. G. Ayres
The Annals of Occupational Hygiene 54 ( 3 ): 272 - 280 , 2010