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3. Planned extracapsular extraction versus phacoemulsification with IOL implantation: A comparison of concurrent series;Kraff;J Am Intraocular Implant Soc,1982
4. Small incisions to control astigmatism during cataract surgery;Neumann;J Cataract Refract Surg,1989
5. The phacoemulsification procedure II: corneal endothelial changes;Polack;Invest Ophthalmol,1976