Koos Kuiper, The Early Dutch Sinologists (1854-1900): Training in Holland and China, Functions in the Netherlands Indies (Leiden: Brill, 2017), pp. 49-55.
Leonard Blussé, “Of Hewers of Wood and Drawers of Water: Leiden University’s Early Sinologists (1854-1911),” in Wilt L. Idema, ed. Chinese Studies in the Netherlands: Past, Present and Future (Leiden: Brill, 2014), pp. 40-41, 56