1. Sickel W. Retinal metabolism in dark and light. In: Fuortes MGF, ed. Handbook of Sensory Physiology Vol.VII/2, Berlin, Heidelberg, New York, Springer, 1972, 667–727.
2. Haschke W, Sickel W. Das Elektroretinogramm des Menschen bei Ausfall der Ganglienzellen and partieller Schädigung der Bipolaren. Acta Ophthalmol 1962; Supplement 70:164–167.
3. Small GH, Peyman GA, Srinivasan A, Smith RT, Fiscella R. Retinal toxicity of combination antiviral drugs in an animal model. Can J Ophthalmol 1987; 22:300–303.
4. Smee DF, Martin JC, Verheyden JPH et al. Anti-herpes virus activity of the acyclic nucleoside 9-(I,3-dihydroxy-2-propoxy-methyl) guanine. Antimicrobial Agents Chemother 1983; 23: 676–682.
5. Kao GW, Peyman GA, Fiscella R, House B. Retinal toxicity of ganciclovir in vitrectomy infusion solution. Retina 1987; 7: 80–83.