1. Ledley, R.S., Ruddel, F. & Migeon, B. in Proc. 16th Ann. Conf. Eng. med. Biol., (PTBGME, New York, 1963).
2. Green, D.K. & Neurath, P.W. J. Histochem. Cytochem. 22, 531 (1974).
3. Reuter, W., Stoll, D. Labor-Praxis in der Medizin 3, (1980).
4. Foster, J. Analyt. quant. Cytol. 7, 192 (1985).
5. Piper, J. & Rutovitz, D. Pattern Recog. Lett. 4, 397 (1986).