Kurniadi, E., and A. Supriatna. “Lie Symmetry and Lie Bracket in Solving Differential Equation Models of Functional Materials: A Survey”. EKSAKTA: Journal of Sciences and Data Analysis, vol. 20, no. 2, Oct. 2020, pp. 154-9, doi:10.20885/EKSAKTA.vol1.iss2.art10.