TY  - DATA
AU  - N. Kh. Ibragimov, Vladimir F. Kovalev
TI  - Approximate and Renormgroup Symmetries
SN  - 9783642002281
PY  - 2009///
PB  - Springer Berlin Heidelberg
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/978-3-642-00228-1
ER  -