1. The computer calculation of intraocular lens power -a clinical study. Trans Ophthalmol Soc UK 1980; 100;Hillman, J.S.
2. Pitfalls in the determination of intraocular lens power without ultrasound;Binkhorst, R.D.;Ophthalmic Surg,1976
3. Determination of intraocular lens power: a comparison with and without ultrasound;Kraff, M.C.; Sanders, D.R.; Lieberman, H.L.;Ophthalmic Surg,1978
4. Posterior chamber intraocular lens power calculation in 441 cases;Maloney, W.F.; Kratz, R.P.; Mazzocco, T.R.; Davidson, B.;Am IntraOcular Implant Soc J,1979
5. Clinical evaluation of the DBR A-scan unit;Johns, G.E.;Am IntraOcular Implant Soc J,1979