author = { Sohmen, Helmut },

title = { Profitability in shipping },

publisher = {Mohr},

isbn = {3163447503},

keywords = { Shipping , Gewinn , Schifffahrt , Schiffbau , Rentabilität },

year = {1983},

abstract = {Bibliography: p. 31-32},

booktitle = {Kieler Vorträge ; N.F., 103},

address = { Tübingen },

url = { http://slubdd.de/katalog?TN_libero_mab2 }