Gray, T. B.; Cursons, R. T.; Sherwan, J. F.; Rose, P. R. (1995). „Acanthamoeba, bacterial, and fungal contamination of contact lens storage cases”. British Journal of Ophthalmology. 79 (6): 601—605. PMID7626578. doi:10.1136/bjo.79.6.601.
Gray, T. B.; Cursons, R. T.; Sherwan, J. F.; Rose, P. R. (1995). „Acanthamoeba, bacterial, and fungal contamination of contact lens storage cases”. British Journal of Ophthalmology. 79 (6): 601—605. PMID7626578. doi:10.1136/bjo.79.6.601.