TY  - JOUR
AU  - Svetlana Kordyukova
TI  - Nonclassical Approximate Symmetries of Evolution Equations with a Small Parameter
JO  - Symmetry, integrability and geometry: methods and applications
PY  - 2006
VL  - 2
UR  - http://geodesic.mathdoc.fr/item/SIGMA_2006_2_a39/
LA  - en
ID  - SIGMA_2006_2_a39
ER  -