Article Rinard, Ruth G.; (1981)
The problem of the organic individual: Ernst Haeckel and the development of the biogenetic law (/isis/citation/CBB000011932/)

Thesis Wellner, Karen L.; (2014)
Lessons from Embryos: Haeckel's Embryo Drawings, Evolution, and Secondary Biology Textbooks (/isis/citation/CBB001567645/)

Article Henning Hufnagel; Nick Hopwood; Frank Jäger; Nicolas Wanlin; (2016)
Kreatives Kopieren: Ernst Haeckels Embryonenbilder (/isis/citation/CBB488755501/)

Chapter Wells, Jonathan; (2003)
Haeckel's Embryos and Evolution: Setting the Record Straight (/isis/citation/CBB000501890/)

Article Hopwood, Nick; (2006)
Pictures of Evolution and Charges of Fraud: Ernst Haeckel's Embryological Illustrations (/isis/citation/CBB000670195/)

Article Nöthlich, Rosemarie; Wetzel, Nadine; Hoßfeld, Uwe; Olsson, Lennart; (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) (/isis/citation/CBB000933670/)

Article Schmitt, Stéphane; (2003)
Homeosis and Atavistic Regeneration: The “Biogenetic Law” in Entwicklungsmechanik (/isis/citation/CBB000600372/)

Book Hopwood, Nick; Haeckel, Ernst; (2015)
Haeckel's Embryos: Images, Evolution, and Fraud (/isis/citation/CBB001422708/)

Article Oppenheimer, Jane M.; (1982)
Ernst Heinrich Haeckel as an intermediary in the transmutation of an idea (/isis/citation/CBB000019934/)

Article Maurizio Esposito; (2020)
Beyond Haeckel’s Law: Walter Garstang and the Evolutionary Biology that Might Have Been (/isis/citation/CBB981325352/)

Book (1993)
Histoire du concept de récapitulation: Ontogenèse et phylogenèse en biologie et sciences humaines (/isis/citation/CBB000030287/)

Article Mollenhauer, Dieter; (1980)
Die Haeckel-Rezeption durch die Botanik (/isis/citation/CBB000000794/)

Book Gregorio, Mario A. di; (2005)
From Here to Eternity: Ernst Haeckel and Scientific Faith (/isis/citation/CBB000671261/)

Book Roman Göbel; Gerhard Müller; Claudia Taszus; (2019)
Ernst Haeckel: Ausgewählte Briefwechsel, Band 2: Familienkorrespondenz, August 1854 bis März 1857 [Selected Correspondence, Volume 2: Family Correspondence, Augst 1854 to March 1857] (/isis/citation/CBB349269740/)

Article Jahn, Ilse; (1985)
Ernst Haeckel und die Berliner Zoologen: Eine Auswahl aus seinem Briefwechsel mit Eduard von Martens, Wilhelm Peters und Karl Möbius (/isis/citation/CBB000058837/)

Book Keiko Sato; (2015)
Hekkeru to shinka no fantaji: Ichigenron, ekoroji, keitouju ヘッケルと進化の夢:一元論,エコロジー,系統樹 Haeckel and the Fantasy of Evolution: Monism, Ecology, and the Genealogical Tree (/isis/citation/CBB052999110/)

Article Ludwig, David; (2013)
Mediating Objects: Scientific and Public Functions of Models in Nineteenth-Century Biology (/isis/citation/CBB001320174/)

Book Rosemarie Nöthlich, Christoph Kockerbeck; (2006)
Ernst Haeckel -- Wilhelm Bölsche: Kommentarband zum Briefwechsel 1887--1919 (/isis/citation/CBB000610120/)

Article Brain, Robert Michael; (2010)
How Edvard Munch and August Strindberg Contracted Protoplasmania: Memory, Synesthesia, and the Vibratory Organism in Fin-de-Siècle Europe (/isis/citation/CBB001031062/)

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