References
- Briegleb G. Elektronen-Donator-Acceptor-Komplexe. Springer, Berlin 1961
- Herschberger L. A., Lillie R. D. Physical properties of acid formaldehyde hematin or formalin pigment. Bull. Internat. Assoc. Med. Mus 1947; 27: 162–9
- Lillie R. D. Histopathologic Technic and Practical Histochemistry, 3rd ed. McGraw-Hill, New York 1965, Blakiston Division