1080/14786442308634096. ISSN 1941-5982. GHOSH, J. C.; SASTRY, S. L. (October 1945). "Chromium Oxide as a Promoter in Catalysts for the Fischer-Tropsch Synthesis". Nature
WebM video format, Opera Bankoski, Jim (2010-05-19), WebM and VP8 land in Chromium, Google Hachamovitch, Dean (2010-05-19), Another Follow-up on HTML5 Video
Retrieved 22 February 2021. USGS Iron Ore Production Statistics USGS Chromium Production Statistics USGS Bauxite Production Statistics USGS Zinc Production
Potassium 19 K Calcium 20 Ca Scandium 21 Sc Titanium 22 Ti Vanadium 23 V Chromium 24 Cr Manganese 25 Mn Iron 26 Fe Cobalt 27 Co Nickel 28 Ni Copper 29