Viggo Stuckenberg - Sophus Claussen : en brevvexling - Stuckenberg, Viggo, 1863-1905; Claussen, Sophus, 1865-1931; Brøndum-Nielsen, Johannes, 1881-1977 (Kobenhavn : Ejnar Munksgaard, 1963)
Keywords: 19.-20. století; dánští spisovatelé -- 19.-20. století; Danish authors -- 19th-20th centuries; korespondence; correspondence