@article{SIGMA_2021_17_a71,
     author = {Matthias Ludewig and Augusto Stoffel},
     title = {A {Framework} for {Geometric} {Field} {Theories} and their {Classification} in {Dimension} {One}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2021},
     volume = {17},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2021_17_a71/}
}