@article{AUPO_1993__32_1_a10,
     author = {Laitoch, Miroslav},
     title = {A contribution to the phase theory of a linear second-order differential equation in the {Jacobian} form},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {99--110},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {1993},
     mrnumber = {1273173},
     zbl = {0798.34009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1993__32_1_a10/}
}