Md Isa, Mohamad Azwan, Samsudin, Syamsyul and Noh, Mohd Khairul Ariff (2016) “ Co-integration and Causality between the Spot and Futures Markets: Pre and Post Implementation of NKEAs”, Advances in Business Research International Journal, 2(1), p. 98-`110. doi: 10.24191/abrij.v2i1.10068 .