@article{pratidhina_kuswanto_dwandaru_2020,  title={Visualising Spatial Light Intensity Distribution on Optical Fibre Core with Spreadsheet},  volume={42},  ISSN={1806-1117},  url={https://doi.org/10.1590/1806-9126-RBEF-2020-0201},  DOI={10.1590/1806-9126-RBEF-2020-0201},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Pratidhina, Elisabeth and Kuswanto, Heru and Dwandaru, Wipsar Sunu Brams},  year={2020},  pages={e20200201} }