WESTERGAARD, Harald. RAGNAR FRISCH: New Methods of Measuring Marginal Utility. Tübingen 1932. Nationaløkonomisk Tidsskrift, [S. l.], v. 40, 1932. Disponível em: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/57506. Acesso em: 5 dec. 2025.