Article Zigman, Peter M. (2009)
“ ... und meine Anschauungen sind natürlich selbständiger geworden” -- Friedrich Ratzels Briefe an Ernst Haeckel, seinen Mentor und akademischen Kollegen. Würzburger Medizinhistorische Mitteilungen (p. 375). (/isis/citation/CBB001032286/) unapi

Article Rainer Brömer (2009)
Plastidules to Humans: Leopoldo Maggi (1840-1905) and Ernst Haeckel's naturalist philosophy in the Kingdom of Italy. Annals of the History and Philosophy of Biology (pp. 1-180). (/isis/citation/CBB352784635/) unapi

Essay Review Radick, Gregory (2009)
[Essay review]. History Today. (/isis/citation/CBB001567089/) unapi

Chapter Morton, Marsha (2009)
From Monera to Man: Ernst Haeckel, Darwinismus, and Nineteenth-Century German Art. In: The Art of Evolution: Darwin, Darwinisms, and Visual Culture. (/isis/citation/CBB001035101/) unapi

Essay Review Hopwood, Nick (2009)
Darwinism's Tragic Genius: Psychology and Reputation. Isis: International Review Devoted to the History of Science and Its Cultural Influences. (/isis/citation/CBB001566492/) unapi

Thesis Heie, Nolan (2008)
Ernst Haeckel and the Redemption of Nature. (/isis/citation/CBB001561319/) unapi

Book Gliboff, Sander (2008)
H. G. Bronn, Ernst Haeckel, and the Origins of German Darwinism: A Study in Translation and Transformation. (/isis/citation/CBB000850350/) unapi

Article Reynolds, Andrew; Hülsmann, Norbert (2008)
Ernst Haeckel's Discovery of Magosphaera planula: A Vestige of Metazoan Origins?. History and Philosophy of the Life Sciences (p. 339). (/isis/citation/CBB000931573/) unapi

Book Müller, Fritz; Breidbach, Olaf (2008)
Für Darwin und andere Schriften zur Biologie. (/isis/citation/CBB001232002/) unapi

Article Reynolds, Andrew (2008)
Ernst Haeckel and the Theory of the Cell State: Remarks on the History of a Bio-Political Metaphor. History of Science (p. 123). (/isis/citation/CBB000931532/) unapi

Article Volker Wissemann (2008)
Johannes Reinke (1839-1931) – Botany, a study of pure divine service. Annals of the History and Philosophy of Biology (pp. 67-78). (/isis/citation/CBB501385295/) unapi

Book Richards, Robert J. (2008)
The Tragic Sense of Life: Ernst Haeckel and the Struggle over Evolutionary Thought. (/isis/citation/CBB000950269/) unapi

Article Richards, Robert J. (2007)
Ernst Haeckel's Alleged Anti-Semitism and Contributions to Nazi Biology. Biological Theory (p. 97). (/isis/citation/CBB001230135/) unapi

Article Alter, Stephen G. (2007)
Race, Language, and Mental Evolution in Darwin's Descent of Man. Journal of the History of the Behavioral Sciences (p. 239). (/isis/citation/CBB000772495/) unapi

Article Andrei, Gabriela (2007)
“Quelques notes sur l'œuvre d'Ernest Haeckel”: Un manuscrit inédit d'Arnold L. Montandon. Noesis: Travaux du Comité Roumain d'Histoire et de Philosophie des Sciences (p. 219). (/isis/citation/CBB000831570/) unapi

Article Kleeberg, Bernhard (2007)
God-Nature Progressing: Natural Theology in German Monism. Science in Context (p. 537). (/isis/citation/CBB000850279/) unapi

Article Nöthlich, Rosemarie; Wetzel, Nadine; Hoßfeld, Uwe; et al. (2006)
“Ich acquirirte das Schwein sofort, ließ nach dem Niederstechen die Pfoten abhacken u. schickte dieselben an Darwin”---Der Briefwechsel von Otto Zacharias mit Ernst Haeckel (1874--1898). Annals of the History and Philosophy of Biology (p. 177). (/isis/citation/CBB000933670/) unapi

Book Nöthlich, Rosemarie; Weber, Heiko; Hoßfeld, Uwe; et al. (2006)
“Substanzmonismus” und/oder “Energetik”: Der Briefwechsel von Ernst Haeckel und Wilhelm Ostwald (1910 bis 1918): zum 100. Jahrestag der Gründung des Deutschen Monistenbundes. (/isis/citation/CBB000954602/) unapi

Article Hopwood, Nick (2006)
Pictures of Evolution and Charges of Fraud: Ernst Haeckel's Embryological Illustrations. Isis: International Review Devoted to the History of Science and Its Cultural Influences (p. 260). (/isis/citation/CBB000670195/) unapi

Article Levit, Georgy S.; Hoßfeld, Uwe (2006)
The Forgotten “Old-Darwinian” Synthesis: The Evolutionary Theory of Ludwig H. Plate (1862--1937). NTM: Zeitschrift für Geschichte der Naturwissenschaften, Technik und Medizin (p. 9). (/isis/citation/CBB000670835/) unapi