TY - JOUR TI - The role of generalised gradient approximation in structural and electronic properties of bulk and surface of 'beta'-GaN and GaAs PY - 1999 AU - Miotto, R. AU - Srivastava, G. P. AU - Ferraz, A. C. T2 - Surface Science DO - 10.1016/s0039-6028(99)00109-0 UR - https://doi.org/10.1016/s0039-6028(99)00109-0 PP - Amsterdam VL - 435 SP - 377-381 ER -