SASSMANNSHAUSEN (M.A.), F. Franz L. Neumann’s Struggle with Marxism. Bajo Palabra, [S. l.], n. 21, p. 299–318, 2019. DOI: 10.15366/bp2019.21.017. Disponível em: https://revistas-new.uam.es/bajopalabra/article/view/bp2019.21.017. Acesso em: 9 set. 2025.