1. Larsen ED, Clark DE, Moore KL, et al. Intelligent control of cupola melting. University of North Texas Libraries, Digital library, https://www.osti.gov/biblio/484517-intelligent-control (1997, accessed 3 May 2020).
2. Meredith J. The cupola furnace. Atlas Foundry Company Publications, http://www.atlasfdry.com/cupolafurnace.htm (2016, accessed 20 July 2016).
3. Raymond HM. Cupola furnace, Modern Shop Practice, Part 1–3, http://chestofbooks.com/crafts/machinery/shop-practice-v2/cupola-furnace.html (2011, accessed 21 Oct 2021).
4. Sengerandu’s Tutorials. Cupola furnace, Wordpress blog, https://sengerandu.wordpress.com/tutorials/basic-manufacturing-process/foundry-practice/cupola-furnace (2013, accessed 21 Oct 2021)