@article{01215959,
title = {Approximation of },
journal = {The New York Journal of Mathematics [electronic only]},
volume = {3A},
year = {1998},
pages = {75-82},
zbl = {0914.28013},
language = {en},
url = {http://dml.mathdoc.fr/item/01215959}
}
Akcoglu, M.A.; Baxter, J.R.; Ha, D.M.; Jones, R.L. Approximation of . The New York Journal of Mathematics [electronic only], Tome 3A (1998) pp. 75-82. http://gdmltest.u-ga.fr/item/01215959/