@article{CM_1956-1958__13__16_0,
     author = {Snapper, E.},
     title = {Higher-dimensional field theory. {II.} {Linear} systems},
     journal = {Compositio Mathematica},
     pages = {16--38},
     publisher = {Kraus Reprint},
     volume = {13},
     year = {1956-1958},
     mrnumber = {82178},
     zbl = {0072.02901},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1956-1958__13__16_0/}
}