1. The general similarity solution of the heat equation;Bluman;J Math Mech,1969
2. New classes of symmetries for partial differential equations;Bluman;J Math Phys,1988
3. Symmetries and differential equations;Bluman,1989
4. Symmetry and integration methods for differential equations;Bluman,2002
5. Applications of symmetry methods to partial differential equations;Bluman,2010