@article{ARM_1984_20_1_a2,
     author = {Krupka, Demeter and Musilov\'a, Jana},
     title = {Hamilton extremals in higher order mechanics},
     journal = {Archivum mathematicum},
     pages = {21--30},
     year = {1984},
     volume = {20},
     number = {1},
     mrnumber = {785043},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1984_20_1_a2/}
}