1. https://corrosion‐doctors.org/Forms/Accidents.htm last visited 13 September 2020.
2. https://news.kodoom.com/iran‐economy/%D8%A2%D8%AA%D8%B4‐%D8%B3%D9%88%D8%B2%DB%8C‐%D8%AF%D8%B1‐%D9%85%D8%AC%D8%AA%D9%85%D8%B9‐%D9%BE%D8%AA%D8%B1%D9%88%D8%B4%DB%8C%D9%85%DB%8C‐%D9%BE%D8%B1%D8%AF%DB%8C%D8%B3/story/1068411 last visited 14 September 2020.
3. https://www.oilandgasiq.com/integrity‐hse‐maintenance/articles/shutdowns‐and‐turnarounds‐in‐the‐oil‐and‐gas‐indus last visited 14 September 2020.