- A V Mikhailov, V S Novikov, “Perturbative symmetry approach”, J. Phys. A: Math. Gen., 35, no. 22, 2002, 4775
- Antonio Moro, Reference Module in Materials Science and Materials Engineering, 2024
- Nitin Serwa, “Master symmetries of non-linear systems”, Phys. Scr., 99, no. 6, 2024, 065037