Written works
• Zoologische Tropenreise mit Kamera und Feldstecher durch die Indo-Australische Tierwelt, 1928 – Zoological tropical journeys (with camera & binoculars for the study of Indo-Australian wildlife). • "Observations on the venomous effect of Naja bungarus", published in 1929 in English. • De Javaansche gifslangen en haar beteekenis voor den mensch, 1930. • Een zoologische reis door de tropen (ca. 1930). • "The Javanese black cobra", published in 1930 in English. • "Collected papers [Reprints of Felix Kopstein]", (1923–1938, in English). ==References==