@article{ARM_1986__22_3_a7,
     author = {Krupka, Demeter},
     title = {Geometry of {Lagrangean} structures. {I}},
     journal = {Archivum mathematicum},
     pages = {159--173},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1986},
     mrnumber = {868132},
     zbl = {0618.58002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1986__22_3_a7/}
}