@article{PORMA_1992__49_3_115794,
     author = {Prolla, Jo\~ao B.},
     title = {Slice-products in bivariate approximation},
     journal = {Portugaliae mathematica},
     pages = {333--347},
     publisher = {mathdoc},
     volume = {49},
     number = {3},
     year = {1992},
     mrnumber = {1201294},
     zbl = {0777.41030},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1992__49_3_115794/}
}