Pratikha, A. R., Supriadi, B. . and Handayani, R. D. . (2022) “Electron’s Position Expectation Values and Energy Spectrum of Lithium Ion (Li^(2+)) on Principal Quantum Number n≤3”, Jurnal Penelitian Pendidikan IPA, 8(1), pp. 252–256. doi: 10.29303/jppipa.v8i1.840.