@article{KYB_2008__44_3_a12,
     author = {Vincekov\'a, Elena},
     title = {New operations on partial {Abelian} monoids defined by preideals},
     journal = {Kybernetika},
     pages = {441--450},
     publisher = {mathdoc},
     volume = {44},
     number = {3},
     year = {2008},
     mrnumber = {2436043},
     zbl = {1154.81305},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2008__44_3_a12/}
}