1. J. Haggendal and T. Malmfors, Acta Physiol. Scand. 59, 295 (1963).
2. J. Haggendal and T. Malmfors, Acta Physiol. Scand. 64, 58 (1965).
3. T. Malmfors, Acta Physiol. Scand. 58, 99 (1963).
4. B. Ehinger, Z. Zellforsch 71, 146 (1966).
5. B. Ehinger, Invest. Ophthalmol. 5, 42 (1966).