1. ‘Preparation of steel substrates before application of paints and related products – visual assessment of surface cleanliness – Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings’, ISO 8501–1, ISO, Geneva, Switzerland, 1988.
2. Theory of sintering: from discrete to continuum
3. The Reduction of Iron Ores