@article{120148, author = {Stan\v ek, Svatoslav}, title = {On the intersection of groups of dispersions of the equation $y'=q(t)y$ and of its accompanying equation}, journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica}, volume = {23}, year = {1984}, pages = {33-38}, zbl = {0596.34015}, mrnumber = {837027}, language = {en}, url = {http://dml.mathdoc.fr/item/120148} }
Staněk, Svatoslav. On the intersection of groups of dispersions of the equation $y'=q(t)y$ and of its accompanying equation. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 23 (1984) pp. 33-38. http://gdmltest.u-ga.fr/item/120148/
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