@article{PORMA_1999__56_2_49150,
     author = {Ayache, A.},
     title = {Polynomial rings with coefficients in an intersection of fibred products. {(Anneaux} de polyn\^omes \`a coefficients dans une intersection de produits fibr\'es.)},
     journal = {Portugaliae mathematica},
     pages = {155--168},
     publisher = {mathdoc},
     volume = {56},
     number = {2},
     year = {1999},
     zbl = {0984.13011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1999__56_2_49150/}
}