@article{KJM_2007_30_1_a16,
     author = {Daniel A. Romano},
     title = {The second isomorphism theorem on ordered set under antiorders},
     journal = {Kragujevac Journal of Mathematics},
     pages = {235 - 242},
     year = {2007},
     volume = {30},
     number = {1},
     zbl = {1199.03050},
     url = {http://geodesic.mathdoc.fr/item/KJM_2007_30_1_a16/}
}