@article{120067, author = {Stan\v ek, Svatoslav}, title = {On the structure of the second-order periodic linear differential equations with the same characteristic multipliers}, journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica}, volume = {17}, year = {1978}, pages = {53-60}, zbl = {0426.34008}, mrnumber = {0554036}, language = {en}, url = {http://dml.mathdoc.fr/item/120067} }
Staněk, Svatoslav. On the structure of the second-order periodic linear differential equations with the same characteristic multipliers. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 17 (1978) pp. 53-60. http://gdmltest.u-ga.fr/item/120067/
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