Salawane, C., S. Supriyadi, R. Talapessy, and M. Y. S. Risakotta. “THE MAGNETIC PROPERTIES MEASUREMENT OF COIL FOR GRAVITATIONAL ACCELERATION DETERMINATION”. Spektra: Jurnal Fisika Dan Aplikasinya, Vol. 5, no. 2, Aug. 2020, pp. 119 -28, doi:10.21009/SPEKTRA.052.04.