@article{PORMA_1993__50_2_115815,
     author = {Ayache, Ahmed},
     title = {Sous-anneaux de la forme {D+I} d'une {K-alg\`ebre} int\`egre},
     journal = {Portugaliae mathematica},
     pages = {139--149},
     publisher = {mathdoc},
     volume = {50},
     number = {2},
     year = {1993},
     mrnumber = {1244493},
     zbl = {0832.13018},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1993__50_2_115815/}
}