Erik Rosenfeldt, Niels. “C.A. Koefoed: My Share in the Stolypin Agrarian Reforms. Edited by Bent Jensen. Odense University Slavic Studies, Vol. IV. Odense University Press, 1985. 184 S. Ill”. Historisk Tidsskrift, bd. 15, januar 1987, https://tidsskrift.dk/historisktidsskrift/article/view/53029.