1. Mereschkowsky, C., Über Natur und Ursprung der Chromatophoren im Pflanzenreiche, Biol. Centralbl., 1905, vol. 25, p. 593.
2. Merezhkovskii, K.S., Teoriya dvukh plazm, kak osnova simbiogeneza, novogo ucheniya o proizkhozhdenii organizmov (Theory of Two Plasmas as the Basis of Symbiogenesis—A New Concept on Origin of Organisms), Kazan: Tipogr. Imper. Univ., 1909.
3. Khakhina, L.N., Problema simbiogeneza (A Problem of Symbiogenesis), Leningrad: Nauka, 1979.
4. Kolchinskii, E.I., Edinstvo evolyutsionnoi teorii v razdelennom mire XX veka (The Integration of Evolutionary Theory in the Divided World of the 20th Century), St. Petersburg: Nestor-Istoriya, 2015.
5. The evolution of algal chloroplasts;S.P. Gibbs,1993