Griffith, William P.; Morris, Peter J. T. (2003). "Charles Hatchett FRS (1765–1847), Chemist and Discoverer of Niobium". Notes and Records of the Royal Society of London. 57 (3): 299–316. DOI:10.1098/rsnr.2003.0216. ISSN0035-9149. JSTOR3557720.
jstor.org
Griffith, William P.; Morris, Peter J. T. (2003). "Charles Hatchett FRS (1765–1847), Chemist and Discoverer of Niobium". Notes and Records of the Royal Society of London. 57 (3): 299–316. DOI:10.1098/rsnr.2003.0216. ISSN0035-9149. JSTOR3557720.
Griffith, William P.; Morris, Peter J. T. (2003). "Charles Hatchett FRS (1765–1847), Chemist and Discoverer of Niobium". Notes and Records of the Royal Society of London. 57 (3): 299–316. DOI:10.1098/rsnr.2003.0216. ISSN0035-9149. JSTOR3557720.