@article{DMPS_2008_28_1_a6,
     author = {Hauke, Jan},
     title = {Some remarks on operators preserving partial orders of matrices},
     journal = {Discussiones Mathematicae. Probability and Statistics},
     pages = {143--155},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {2008},
     zbl = {05498880},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMPS_2008_28_1_a6/}
}