@article{GDZPPN002040263,
title = {On the n-th order iterative ordinary linear differential equations.},
journal = {Aequationes mathematicae},
volume = {45},
year = {1993},
pages = {38-43},
zbl = {0791.34012},
url = {http://dml.mathdoc.fr/item/GDZPPN002040263}
}
Neuman, Frantisek. On the n-th order iterative ordinary linear differential equations.. Aequationes mathematicae, Tome 45 (1993) pp. 38-43. http://gdmltest.u-ga.fr/item/GDZPPN002040263/