Sykes, D. A., Wilson, R., Greenstone, M., Currie, D. C., Steinfort, C., & Cole, P. J. (1987). Deleterious effects of purulent sputum sol on human ciliary function in vitro: At least two factors identified.

Sykes, D A., R. Wilson, M. Greenstone, D C. Currie, C. Steinfort, och P J. Cole. Deleterious Effects of Purulent Sputum Sol On Human Ciliary Function in Vitro: At Least Two Factors Identified. 1987.

Sykes, D A., et al. Deleterious Effects of Purulent Sputum Sol On Human Ciliary Function in Vitro: At Least Two Factors Identified. 1987.