Measuring Instrument Constructs of Return Factors for Green Office Building Investments Variables Using Rasch Measurement ModelMona Isa, Mazlan Abu Bakar, Ibrahim Sipan, Mohamad Sufian Hasim, Ahmad Ezanee Hashim and Mohd Khairul Anuar JalilMATEC Web Conf., 66 (2016) 00125DOI: https://doi.org/10.1051/matecconf/20166600125