@article{ARM_1995__31_4_a8, author = {Vosmansk\'a, Gabriela}, title = {Natural transformations of semi-holonomic 3-jets}, journal = {Archivum mathematicum}, pages = {313--318}, publisher = {mathdoc}, volume = {31}, number = {4}, year = {1995}, mrnumber = {1390591}, zbl = {0852.58003}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1995__31_4_a8/} }