@article{abdullah_ma’amor_daud_hamid_2017,  title={SELECTIVE SYNTHESIS OF PEG-MONOESTER USING CESIUM HETEROPOLY ACID AS HETEROGENEOUS CATALYST},  volume={40},  ISSN={0100-4042},  url={https://doi.org/10.21577/0100-4042.20170040},  DOI={10.21577/0100-4042.20170040},  number={5},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Abdullah, Fatimah Zahara and Ma’amor, Azman and Daud, Nur Atiqah and Hamid, Sharifah Bee Abd},  year={2017},  month={Jun},  pages={506–512} }