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2. Johnston, C. D., ‘Toughness of steel fiber reinforced concrete’, in ‘Steel Fibre Concrete’, US-Sweden joint seminar, Swedish Cement and Concrete Institute, Stockholm, edited by S. P. Shah and Å. Skarendahl (Elsevier Applied Science, London, 1986) pp. 333–360.
3. Idem, ‘Definition and measurement of flexural toughness parameters for fiber reinforced concrete’,Cement Concr. Aggreg. 4(2) (1982) 61–67.
4. Johnston, C. D. and Gray, R. J., ‘Flexural toughness and first-crack strength of fibre-reinforced concrete using ASTM Standard C1018’, in Proceedings of 3rd International RILEM Symposium on Developments in Fibre Reinforced Cement and Concrete, Sheffield, July 1986, Paper 5.1.
5. Johnston, C. D. and Carter, P. D., ‘Fiber-reinforced concrete and shotcrete for repair and restoration of highway bridges in Alberta’, in Proceedings of International Symposium on Recent Developments in Concrete Fiber Composites, US Transportation Research Board, TRB Record No. 1226 (1989) pp. 7–16.