@article{10_4153_CMB_2007_010_4,
     author = {Klep, Igor},
     title = {On {Valuations,} {Places} and {Graded} {Rings} {Associated} to {\ensuremath{*}-Orderings}},
     journal = {Canadian mathematical bulletin},
     pages = {105--112},
     year = {2007},
     volume = {50},
     number = {1},
     doi = {10.4153/CMB-2007-010-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2007-010-4/}
}