List of Articles ‎Closed Unit Balls

• Open Access Article
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  1 - Best Co-approximation and Worst Approximation by Closed Unit Balls
  Hamid Tehrani
  20.1001.1.25382217.2022.16.2.8.6
• Open Access Article
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  2 - Best approximation by closed unit balls
  H. R. Kamali H. Mazaheri H. R. Khadezadeh H. Ardakani