Shou-Fu Tian, “Initial-boundary value problems of the coupled modified Korteweg–de Vries equation on the half-line via the Fokas method”, J. Phys. A: Math. Theor., 50, № 39, 2017, 395204
Matteo Gorgone, Francesco Oliveri, “Approximate Noether Symmetries of Perturbed Lagrangians and Approximate Conservation Laws”, Mathematics, 9, № 22, 2021, 2900
Peter E. Hydon, “Symmetry analysis of initial-value problems”, Journal of Mathematical Analysis and Applications, 309, № 1, 2005, 103
Matteo Gorgone, Francesco Oliveri, “Consistent approximate Q-conditional symmetries of PDEs: application to a hyperbolic reaction-diffusion-convection equation”, Z. Angew. Math. Phys., 72, № 3, 2021, 119
Andronikos Paliathanasis, “Similarity solutions for the Wheeler–DeWitt equation in $f\left( R\right) $-cosmology”, Eur. Phys. J. C, 79, № 12, 2019, 1031
A S Fokas, “Linearizable initial boundary value problems for the sine-Gordon equation on the half-line”, Nonlinearity, 17, № 4, 2004, 1521
I. T. Khabibullin, “Sine-Gordon equation on the semi-axis”, Theor Math Phys, 114, № 1, 1998, 90