@article{MZ_1989__201_4_174052,
     author = {J.J. Grobler and C.C.A. Labuschagne},
     title = {A {Note} on the {Approximation} of {Elements} in the {Riesz} {Tensor} {Product.}},
     journal = {Mathematische Zeitschrift},
     pages = {273--278},
     publisher = {mathdoc},
     volume = {201},
     number = {4},
     year = {1989},
     zbl = {0648.46062},
     url = {http://geodesic.mathdoc.fr/item/MZ_1989__201_4_174052/}
}