Ahmed Hassan, Ata El-kareim Shoeib, and Mostafa Abd El-Magied, “USE OF CARBON NANOTUBES IN THE RETROFITTING OF REINFORCED CONCRETE BEAMS WITH AN OPENING AND THE EFFECT OF DIRECT FIRE ON THEIR BEHAVIOUR”, INTERNATIONAL JOURNAL OF GEOMATE, vol. 14, no. 44, pp. 149–158, Apr. 2018.