@article{AUPCM_2014_13_a2,
     author = {Toparkus, Heinz},
     title = {First-order systems of linear partial differential equations: normal forms, canonical systems, transform methods},
     journal = {Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica},
     publisher = {mathdoc},
     number = {13},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPCM_2014_13_a2/}
}