TY  - JOUR
AU  - Sergey Ya. Startsev
TI  - Formal Integrals and Noether Operators of Nonlinear Hyperbolic Partial Differential Systems Admitting a Rich Set of Symmetries
JO  - Symmetry, integrability and geometry: methods and applications
PY  - 2017
VL  - 13
UR  - http://geodesic.mathdoc.fr/item/SIGMA_2017_13_a33/
LA  - en
ID  - SIGMA_2017_13_a33
ER  -