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Hauptprobleme der Unternehmungsforschung
Billeter, Ernst P. - In: Unternehmensforschung : Zeitschrift für die Anwendung … 1 (1956/1957) 4, pp. 149-159
Persistent link: https://www.econbiz.de/10001918759
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Operations research und Statistik : Vortrag, 9 XII,1960
Billeter, Ernst P. - In: Swiss journal of economics and statistics 97 (1961) 2, pp. 185-193
Persistent link: https://www.econbiz.de/10001918770
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Overlapping tendencies in operations research systems theory and cybernetics : proceedings of an international symposium, University of Fribourg, Switzerland, October 14-15, 1976
Billeter, Ernst P. (ed.); Cuénod, Michel (contributor);  … - 1976 - 1. Aufl.
Persistent link: https://www.econbiz.de/10000326242