1. British Standards Institution. Air-cooled blastfurnace slag coarse aggregate, BS 1047 (London: BSI, 1942).
2. British Standards Institution. Air-cooled blastfurnace slag coarse aggregate, BS 1047 (London: BSI, 1952).
3. British Standards Institution. Air-cooled blastfurnace slag coarse aggregate, BS 1047 (London: BSI, 1974).
4. British Standards Institution. Air-cooled blastfurnace slag coarse aggregate, BS 1047 (London: BSI, 1983).
5. Deutsches Institut Eh. Normung e.V. Aggregates for concrete, part 3. DIN 4226: 1983.