TY  - JOUR
AU  - Ibragimov,  R.N.
TI  - Approximate equivalence transformations and invariant solutions of a perturbed nonlinear wave equation
JO  - Electronic journal of differential equations
PY  - 2001
VL  - 2001
UR  - http://geodesic.mathdoc.fr/item/EJDE_2001__2001__a19/
LA  - en
ID  - EJDE_2001__2001__a19
ER  -