Zeuthen's book Problems of Monopoly and Economic Warfare, published in London in 1930 with a foreword by the famous economist Joseph Schumpeter, established for Zeuthen an international reputation among economists.
Zeuthens bog Problems of Monopoly and Economic Warfare, der blev udgivet i London i 1930 med forord af en af tidens store økonomer Joseph Schumpeter, etablerede forfatterens navn i den internationale forskningsverden.