TY  - JOUR
AU  - Sara Froehlich
TI  - The Variational Bi-Complex for Systems of Semi-Linear Hyperbolic PDEs in Three Variables
JO  - Symmetry, integrability and geometry: methods and applications
PY  - 2018
VL  - 14
UR  - http://geodesic.mathdoc.fr/item/SIGMA_2018_14_a95/
LA  - en
ID  - SIGMA_2018_14_a95
ER  -