BJÖRKMAN, Sven. Rainer Knapas, Monrepos. Ludwig Heinrich Nicolay och hans värld i 1700-talets ryska Finland, Atlantis, Stockholm, 2003. 1700-tal: Nordic Journal for Eighteenth-Century Studies, Tromsø, Norway, v. 1, p. 154–156, 2014. DOI: 10.7557/4.2935. Disponível em: https://septentrio.uit.no/index.php/1700/article/view/2935. Acesso em: 18 apr. 2026.