Article Richards, Robert J.; (2007)
Ernst Haeckel's Alleged Anti-Semitism and Contributions to Nazi Biology

Article Liu, Lydia H.; (2009)
Life as Form: How Biomimesis Encountered Buddhism in Lu Xun

Book Olivier Rieppel; (2016)
Phylogenetic Systematics: Haeckel to Hennig

Essay Review Radick, Gregory; (2009)
[Essay review]

Article Rainer Brömer; (2009)
Plastidules to Humans: Leopoldo Maggi (1840-1905) and Ernst Haeckel's naturalist philosophy in the Kingdom of Italy

Book Müller, Fritz; Breidbach, Olaf; (2008)
Für Darwin und andere Schriften zur Biologie

Article Uschmann, Georg; (1979)
Haeckel's biological materialism

Book Richards, Robert J.; (2008)
The Tragic Sense of Life: Ernst Haeckel and the Struggle over Evolutionary Thought

Article Brain, Robert Michael; (2010)
How Edvard Munch and August Strindberg Contracted Protoplasmania: Memory, Synesthesia, and the Vibratory Organism in Fin-de-Siècle Europe

Article Ludwig, David; (2013)
Mediating Objects: Scientific and Public Functions of Models in Nineteenth-Century Biology

Essay Review Hopwood, Nick; (2009)
Darwinism's Tragic Genius: Psychology and Reputation

Book Preuss, Dirk; Hossfeld, Uwe; Breidbach, Olaf; (2006)
Anthropologie nach Haeckel

Article Reynolds, Andrew; (2008)
Ernst Haeckel and the Theory of the Cell State: Remarks on the History of a Bio-Political Metaphor

Article Santos, Guilherme Francisco; de Carvalho Ramos, Maurício; (2013)
Ernst Haeckel e a sua Monografia das moneras

Book Gliboff, Sander; (2008)
H. G. Bronn, Ernst Haeckel, and the Origins of German Darwinism: A Study in Translation and Transformation

Article Reynolds, Andrew; Hülsmann, Norbert; (2008)
Ernst Haeckel's Discovery of Magosphaera planula: A Vestige of Metazoan Origins?

Book Sandmann, Jürgen; (1990)
Der Bruch mit der humanitären Tradition: Die Biologisierung der Ethik bei Ernst Haeckel und anderen Darwinisten seiner Zeit

Article Henning Hufnagel; Robert Matthias Erdbeer; Fank Jäger; Nicolas Wanlin; (2016)
Die „Erhaltung der Fühlung“. Haeckels Seelenzellen und der Stil der Esoterischen Moderne

Article Le Guyader, Hervé; (2000)
Le concept de plan d'organisation

Chapter Gliboff, Sander; (2012)
Monism and Morphology at the Turn of the Twentieth Century