1. Betteridge, D.: Anal. Chem. 48, 1034A (1976)
2. Lavington, S.: Early British Computers. Manchester, Manchester University Press 1980, p. 48
3. Instrument News (Perkin-Elmer Ltd.) 31 (1), 12 (1981)
4. Henderson, K. F.: MINC Newsletter (Digital Equipment Corp.) 1 (4), 6 (1979)
5. Savitzky, A.: Anal. Chem. 33 (13), 25A (1961)