@article{MASLO_2005_55_4_a1,
     author = {Jakub{\'\i}k, J\'an},
     title = {Direct product decompositions of pseudo effect algebras},
     journal = {Mathematica slovaca},
     pages = {379--398},
     year = {2005},
     volume = {55},
     number = {4},
     mrnumber = {2181779},
     zbl = {1113.06007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_2005_55_4_a1/}
}