ABU-BAKAR, S.H., MUHAMMAD-SUKKI, F., FREIER, D., RAMIREZ-INIGUEZ, R., MALLICK, T.K., MUNIR, A.B., YASIN, S.H. M., MAS'UD, A.A. and YUNUS, N.M. 2015. Optimisation of the performance of a novel rotationally asymmetrical optical concentrator design for building integrated photovoltaic system. Energy [online], 90(Part 1), pages 1033-1045. Available from: https://doi.org/10.1016/j.energy.2015.07.133