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Die Frage des Risikos in der Betriebswirtschaftslehre
Jenni, Oskar, (1952)
Evolución de la productividad y riesgo
Albach, Horst, (1981)
Do high risks lead to high returns?
Richardson, Lemont K., (1970)
Measures of structural change in macromarketing systems
Layton, Roger A., (1989)
Services are important!
Layton, Roger A., (1991)
Remembering Don Dixon
Layton, Roger A., (2011)