@article{120139, author = {Stan\v ek, Svatoslav}, title = {On a structure of second order linear differential equations with periodic coefficients having the same discriminant}, journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica}, volume = {22}, year = {1983}, pages = {91-98}, zbl = {0584.34004}, mrnumber = {744703}, language = {en}, url = {http://dml.mathdoc.fr/item/120139} }
Staněk, Svatoslav. On a structure of second order linear differential equations with periodic coefficients having the same discriminant. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 22 (1983) pp. 91-98. http://gdmltest.u-ga.fr/item/120139/
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