1. D. H. Miller, L. Gutay, P. B. Johnson, F. J. Loeffler, R. L. McIlwain, R. J. Sprafka, R. B. Willmann: Phys. Rev. 153, 1423 (1967)
2. D.A. Glaser: Phys. Rev. 91, 762 (1953)
3. F.Seitz: Phys. Fluids 1, 2 (1958)
4. R. D. Watt: “1973 International Conference on Instrumentation for High Energy Physics”; ed. by S. Stipcich; Frascati (1973) pp. 44–49
5. H. Brettel, C. Carathanassis, L. Kollmeder: “International Conference on Data Handling Systems in High Energy Physics”; Vol. II, Cambridge (1970); CERN Rept. 70-21, p. 851