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@article {MR0126738,
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@article {MR0109975,
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     TITLE = {A short elementary proof of the {B}ishop-{S}tone-{W}eierstrass
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@article {MR0133676,
    AUTHOR = {Bishop, Errett},
     TITLE = {A generalization of the {S}tone-{W}eierstrass theorem},
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@article {MR2587018,
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     TITLE = {A survey on the {W}eierstrass approximation theorem},
   JOURNAL = {Divulg. Mat.},
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}