In contradistinction to Bloch, the Belgian historian François-Louis Ganshof defined feudalism from a narrow legal and military perspective, arguing that feudal relationships existed only within the medieval nobility itself. Ganshof articulated this concept in "Qu'est-ce que la féodalité?" ("What is feudalism?", 1944; translated in English as "Feudalism"). His classic definition of feudalism is widely accepted today among medieval scholars, though questioned both by those who view the concept in wider terms and by those who find insufficient uniformity in noble exchanges to support such a model.