1. Schwertmann U, Cornell RM. Iron oxides in the laboratory, preparation, and characterization. Weinheim: VCH Verlagsgesellschaft, 1991.Search in Google Scholar
2. Endriss H. Aktuelle anorganische Buntpigmente. Zorll U, editor. Hannover: Vincentz Verlag, 1997:45.Search in Google Scholar
3. Buxbaum G, Kresse P. In Kittel - Lehrbuch der Lacke und Beschichtungen. vol. 5. Spille J, editor. 2nd ed. Stuttgart/Leipzig: S. Hirzel Verlag, 2003:71.Search in Google Scholar
4. Cornell RM, Schwertmann U. The iron oxides. 2nd ed. Weinheim: Wiley-VCH Verlagsgesellschaft, 2003.10.1002/3527602097Search in Google Scholar
5. Buxbaum G. In industrial inorganic pigments. Buxbaum G, Pfaff G, editor. 3rd ed.Weinheim: Wiley-VCH Verlag, 2005:99.10.1002/3527603735.ch3Search in Google Scholar
6. Pfaff G. Inorganic pigments. Berlin/Boston: Walter de Gruyter GmbH; 2017:97.10.1515/9783110484519Search in Google Scholar
7. Jolly JL, Collins CT. “Natural iron oxide pigments”, iron oxide pigments, part 2, information circular-bureau of mines 8813. U. S. Government Printing Office. Washington, 1980.Search in Google Scholar
8. Lagroix F, Banerjee SK, Jackson MJ. Geological occurrences and relevance of iron oxides. In Iron oxides: From Nature to applications. Faivre D, editor. Weinheim: Wiley-VCH Verlag GmbH & Co. KGaA, 2016:9.Search in Google Scholar
9. Nicola M, Mastrippolito C, Masic A. Iron oxide-based pigments and their use in history. In Iron oxides: From Nature to applications. Faivre D, editor. Weinheim: Wiley-VCH Verlag GmbH & Co. KGaA, 2016:545.Search in Google Scholar
10. Patent DE. 38 20 499 (Bayer). 1988.10.1093/bioscience/38.7.499Search in Google Scholar
11. Carter EV, Laundon RD. J Oil Colour Chem Ass. 1990;1:7.Search in Google Scholar
12. Patent DE. 26 53 765 (Bayer). 1976.Search in Google Scholar
13. Patent DE. 11 91 063 (Bayer). 1963.10.1242/dev.11.1.91Search in Google Scholar
14. Patent DE. 25 17 713 (BASF). 1975.10.1111/j.1471-4159.1975.tb04394.xSearch in Google Scholar
15. Patent US. 6,689,206 (Bayer). 2004.Search in Google Scholar
16. Patent US. 2,388,659 (Interchem. Corp.). 1943.Search in Google Scholar
17. Patent US. 3,133,267 (C. K. Williams & Co.). 1934.Search in Google Scholar
18. Patent US. 2,631,085 (Reconstruction Finance Corp.). 1947.Search in Google Scholar
19. Patent GB. 668929 (Reymers Holms Gamla Ind.). 1950.Search in Google Scholar
20. Patent DE. 704 295 (Glemser). 1937.Search in Google Scholar
21. Patent DE. 22 12 435 (Pfizer). 1972.10.1007/BF01932313Search in Google Scholar
22. Patent DD. 26901 (Hollnagel, Kühn). 1960.Search in Google Scholar
23. Patent US. 2,620,261 (C. K. Williams & Co.). 1947.Search in Google Scholar
24. Patent US. 1,327,061 (West Coast Kalsomine Co.). 1917.Search in Google Scholar
25. Patent US. 1,368,748 (Natioanal Ferrite Co.). 1920.10.1136/bmj.1.3089.368Search in Google Scholar
26. Patent DE. 463 773 (I.G. Farbenind.). 1925.Search in Google Scholar
27. Patent DE. 515 758 (I.G. Farbenind.). 1925.Search in Google Scholar
28. Patent DE. 551 255 (I.G. Farbenind.). 1930.Search in Google Scholar
29. Patent EP. 0 249 843 (Bayer). 1987.Search in Google Scholar
30. Patent DE. 466 463 (I.G. Farbenind.). 1926.Search in Google Scholar
31. Patent EP. 0 014 382 (Bayer). 1980.Search in Google Scholar
32. Pfaff G. In special effect pigments. Pfaff G, editor. 2nd ed. Hannover: Vincentz Network GmbH & Co. KG, 2008:38.Search in Google Scholar
33. Köhler P, Schneider V, Kischkewitz J. Schwarz, Rot, Gelb im Fokus. Farbe + Lack. 2014;120:32.Search in Google Scholar
34. Rowe RC. Synthetic iron oxides: the ideal pharmaceutical colourants. Pharm Int. 1984;9:221.Search in Google Scholar