Best approximants from non-archimedean Stone-Weierstrass subspaces
Compositio Mathematica, Tome 56 (1985) no. 3, pp. 331-349. 
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     author = {Costa Soares, Maria Zoraide M.},
     title = {Best approximants from non-archimedean {Stone-Weierstrass} subspaces},
     journal = {Compositio Mathematica},
     pages = {331--349},
     publisher = {Martinus Nijhoff Publishers},
     volume = {56},
     number = {3},
     year = {1985},
     mrnumber = {814551},
     zbl = {0605.46057},
     language = {en},
     url = {http://www.numdam.org/item/CM_1985__56_3_331_0/}
}
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Costa Soares, Maria Zoraide M. Best approximants from non-archimedean Stone-Weierstrass subspaces. Compositio Mathematica, Tome 56 (1985) no. 3, pp. 331-349. http://www.numdam.org/item/CM_1985__56_3_331_0/

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