Chebyshev polynomials and some methods of approximation.
Portugaliae mathematica, Tome 55 (1998) no. 3, pp. 261-269.

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     author = {Udrea, Gheorghe},
     title = {Chebyshev polynomials and some methods of approximation.},
     journal = {Portugaliae mathematica},
     pages = {261--269},
     publisher = {mathdoc},
     volume = {55},
     number = {3},
     year = {1998},
     zbl = {0931.41016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1998__55_3_48333/}
}
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Udrea, Gheorghe. Chebyshev polynomials and some methods of approximation.. Portugaliae mathematica, Tome 55 (1998) no. 3, pp. 261-269. http://geodesic.mathdoc.fr/item/PORMA_1998__55_3_48333/