German article in Die Gartenlaube, 1896, no 15

scholarly article (1904)

scholarly article (1912)

two-volume publication (1894–1897), part of the series "Hausschatz des Wissens"

German article in Die Gartenlaube, 1898, no. 5

German article in Die Gartenlaube, 1898, no. 9

German article in Die Gartenlaube, 1897, no. 4

German article in Die Gartenlaube, 1896, no. 22

scholarly article (1901)

German publication by Paul Matschie published in 1895

German article in Die Gartenlaube, 1897, no. 26

German article in Die Gartenlaube, 1899, no. 22

scholarly article (1914)

scholarly article (1904)

scholarly article (1914)

scholarly article (1915)

scholarly article (1905)

German article in Die Gartenlaube, 1899, no. 5

German article in Die Gartenlaube, 1897, no. 37

vol. 1 of the book series "Die Süsswasserfauna Deutschlands"

scholarly article (1914)

scholarly article (1918)

edition of book by Paul Matschie

scholarly article (1900)

scholarly article (1893)

scholarly article (1903)

scholarly article (1900)

scholarly article (1898)

scientific article published 1893

scientific article published in 1900