Article Zhao, Yao-yao; Wang, Xiao-qin (2007)
H. G. Zeuthen: Forerunner of Danish Mathematics and Historian of Mathematics in the 19th Century. Journal of Dialectics of Nature (pp. 77-84). (/isis/citation/CBB000760580/) unapi

Article Caveing, Maurice (1996)
The debate between H.G. Zeuthen and H. Vogt (1909-1915) on the historical source of the knowledge of irrational quantities. Centaurus: International Magazine of the History of Mathematics, Science, and Technology (pp. 277-292). (/isis/citation/CBB000070453/) unapi

Article Taisbak, Christian Marinus (1996)
Zeuthen and Euclid's Data 86: Algebra--or a lemma about intersecting hyperbolas?. Centaurus: International Magazine of the History of Mathematics, Science, and Technology (pp. 122-139). (/isis/citation/CBB000070466/) unapi

Chapter Lützen, Jesper; Purkert, Walter (1994)
Conflicting tendencies in the historiography of mathematics: M. Cantor and H.G. Zeuthen. In: The history of modern mathematics (p. 1). (/isis/citation/CBB000041777/) unapi

Chapter Sigurdsson, Skuli (1992)
Equivalence, pragmatic Platonism, and discovery of the calculus. In: The invention of physical science: Intersections of mathematics, theology and natural philosophy since the 17th century: Essays in honor of Erwin N. Hiebert (p. 97). (/isis/citation/CBB000065276/) unapi