@article{NSJOM_2011_41_2a_10,
     author = {Tariq Shah, and Waheed Ahmad Khan},
     title = {On some generalized valuation monoids},
     journal = {Novi Sad Journal of Mathematics},
     pages = {111-116},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2011_41_2a_10/}
}