@article{KJM_2011_35_1_a6,
     author = {Miloje Rajovi\'c and Dragan Dimitrovski},
     title = {Amplitudes of linear oscillations determined by linear homogenous differential equation of the second order and {Liouville-Besge} formulae},
     journal = {Kragujevac Journal of Mathematics},
     pages = {89 },
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2011_35_1_a6/}
}