@article{120059, author = {Vladim\'\i r Vl\v cek}, title = {On a distribution of zeros of solutions of a fourth-order iterated linear differential equation}, journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica}, volume = {17}, year = {1978}, pages = {85-108}, zbl = {0422.34037}, mrnumber = {0554040}, language = {en}, url = {http://dml.mathdoc.fr/item/120059} }
Vlček, Vladimír. On a distribution of zeros of solutions of a fourth-order iterated linear differential equation. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 17 (1978) pp. 85-108. http://gdmltest.u-ga.fr/item/120059/
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