Sovják, R., J. Rašínová, and P. Máca. “EFFECTIVE FRACTURE ENERGY OF ULTRA-HIGH-PERFORMANCE FIBRE-REINFORCED CONCRETE UNDER INCREASED STRAIN RATES”. Acta Polytechnica, vol. 54, no. 5, Oct. 2014, pp. 358-62, doi:10.14311/AP.2014.54.0358.