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To Professor G. Alexits on his 80th birthday
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Vértesi, P. Convergent interpolatory processes for arbitrary systems of nodes. Acta Mathematica Academiae Scientiarum Hungaricae 33, 223–234 (1979). https://doi.org/10.1007/BF01903398
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DOI: https://doi.org/10.1007/BF01903398