@article{triana_fajardo_2013,  title={Experimental study of simple harmonic motion of a spring-mass system as a function of spring diameter},  volume={35},  ISSN={1806-1117},  url={https://doi.org/10.1590/S1806-11172013000400005},  DOI={10.1590/S1806-11172013000400005},  number={4},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Triana, C.A. and Fajardo, F.},  year={2013},  month={Oct},  pages={4305} }