1. Aulhorn, E., Durst, W.: Comparative investigation of automatic and manual perimetry in different visual field defects. Doc. Ophthalmol. Proc. Series, Vol. 14 (1977)
2. Heijl, A.: Computers test logics for automatic perimetry. Acta Ophthalmol. (Kbh.) 55, 837?853 (1977a)
3. Heijl, A.: Time changes of contrast thresholds during automatic perimetry. Acta Ophthalmol. (Kbh.) 55, 696?708 (1977b)
4. Heijl, A.: Studies on computerized perimetry. Acta Ophthalmol. Suppl. (Kbh.) 132 (1977c)
5. Heijl, A., Krakau, C.E.T.: An automatic perimeter, design and pilot study. Acta Ophthalmol. (Kbh.) 53, 293?310 (1975)