@article{10_4064_cm_83_1_15_20,
     author = {Ismail Idris},
     title = {Orderings and preorderings in rings with involution},
     journal = {Colloquium Mathematicum},
     pages = {15--20},
     publisher = {mathdoc},
     volume = {83},
     number = {1},
     year = {2000},
     doi = {10.4064/cm-83-1-15-20},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-83-1-15-20/}
}