1. The shear strength of reinforced concrete members;ASCE-ACI Committee 426;J Struct Div,1973
2. Holes in reinforced concrete girders;Lorentsen;Byggmastaren,1962
3. Behavior and design of large openings in reinforced concrete beams;Nasser;ACI J Proc,1967
4. Behaviour and reinforcement of concrete beams with large rectangular apertures;Prentzas,1968
5. Square openings in webs of continuous joists;Hanson,1969