Ben Yang, Yunjia Song, Yanzhi Ma & Xinxue Zhang. (2023). Group-Invariant Solutions and Conservation Laws of One-Dimensional Nonlinear Wave Equation.
            <i>Journal of Nonlinear Modeling and Analysis</i>. <i>5</i> (4).
            708-719.
         doi:10.12150/jnma.2023.708