Please see the product page on the publisher's (De Gruyter) homepage.
The 7. edition of "Betriebswirtschaftliche Entscheidungstheorie - Einführung in die Logik individueller und kollektiver Entscheidungen" by Prof. Dr. Robert Obermaier and Prof. Dr. Edgar Saliger has been released recently .
Please see the product page on the publisher's (De Gruyter) homepage.