1. Group Analysis of Differential Equations;Ovsiannikov,2014
2. Applications of Symmetry Methods to Partial Differential Equations;Bluman,2010
3. Equivalence Transformations for Classes of Differential Equations (Ph.D. thesis);Lisle,1992
4. On Representations of *-Algebras in Mathematical Physics
5. Preliminary group classification of equations v
t
t=f (x,v
x)v
x
x+g(x,v
x)