1. “Brudlinieteorier”, Copenhagen 1943;Johansen,1962
2. Yield-line theory for the ultimate flexural strength of reinforced concrete slabs;Hognestad;ACI J,1953
3. Plastic and elastic design of slabs and plates, with particular reference to reinforced concrete floor slabs;Wood,1961
4. Tensile membrane behaviour of uniformly loaded rectangular reinforced concrete slabs with fully restrained edges;Park;Mag Concr Res,1964
5. Ultimate strength of rectangular concrete slabs under short-term uniform loading with edges restrained against lateral movement;Park;Proc Inst Civ Eng,1964