@article{EJDE_2009__2009__a48,
     author = {Walcher, Sebastian and Zanders, Christian},
     title = {Strong monotonicity for analytic ordinary differential equations},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2009},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a48/}
}