Siti M. M. MaharumNorsheila FisalAnthony C. C. LoAimi S. A. GhafarFaiz Asraf SaparudinNorshidah KatiranA demand-based spectrum orthogonalisation scheme for interference avoidance in LTE-Advanced heterogeneous networks.1308-1330201627Trans. Emerg. Telecommun. Technol.10https://doi.org/10.1002/ett.2860db/journals/ett/ett27.html#MaharumFLGSK16