Raphael Shen, Economic Reform in Poland and Czechoslovakia. Zeitschrift für Ostmitteleuropa-Forschung, [S. l.], v. 46, n. 4, p. 594–595, 1997. DOI: 10.25627/19974646427. Disponível em: https://openjournals.osmikon.de/zfo/article/view/6427. Acesso em: 16 sep. 2026.