Geodesic
Recovery of the values of harmonic functions at a point from their values at other points
Sbornik. Mathematics, Tome 78 (1994) no. 2, pp. 397-410 Cet article a éte moissonné depuis la source Math-Net.Ru

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The problem of recovering the values of harmonic functions of a certain class at a fixed point from their values at a prescribed collection of points is considered. Relations are obtained for determining best accuracy of recovery and for finding a unique linear method among best recoveries. 
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     title = {Recovery of the~values of harmonic functions at a~point from their values at other points},
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S. N. Kudryavtsev. Recovery of the values of harmonic functions at a point from their values at other points. Sbornik. Mathematics, Tome 78 (1994) no. 2, pp. 397-410. http://geodesic.mathdoc.fr/item/SM_1994_78_2_a7/

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