1. Estimation of loss of visual efficiency;EB, I.Spaeth; FB, Fralick; WF, Jr, Hughes;Arch Ophthalmol,1955
2. Grid for scoring visual fields;Esterman, B.;Arch Ophthalmol,1968
3. Quantitative evaluation of field scotoma and of the visual acuity;Drewniak, K.; Chmielewski, L.; Imielinski, L.; Kopcynski, S.;Klin Oczna,1970
4. Visual acuity, field and physical ability;Collenbrander, M.C.;Ophthalmologica,1975
5. Perimetric charts in an equivalent projection allowing a planmetric determination of the extension of the visual field;Ten, Doeschatte J.;Ophthalmologica,1947