1. Best approximation of functions specified with an error at a finite number of points;Marchuk;Mat. Zametki,1975
2. Best approximation of functions specified with an error at a finite number of points
3. A survey of optimal recovery;Micchelli,1977
4. Lectures on Optimal Recovery;Micchelli,1985
5. A survey of recent results in optimal recovery;Rivlin,1978