@article{10_4064_am_4_4_350_360,
     author = {A. Rybarski},
     title = {Zur {Frage} der {Variationsprinzipien} der {Gleichungen} einer synchronischen {Maschine}},
     journal = {Applicationes Mathematicae},
     pages = {350--360},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1959},
     doi = {10.4064/am-4-4-350-360},
     zbl = {0090.44003},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-4-4-350-360/}
}