Comment on Conjugate heat transfer of mixed convection for viscoelastic   fluid past a stretching sheet, by Hsiao and Chen, Mathematical Problems in   Engineering
  Comment on Conjugate heat transfer of mixed convection for viscoelastic fluid past a stretching sheet, by Kai-Long Hsiao and Guan-Bang Chen, Mathematical Problems in Engineering, Volume 2007, article 17058, 21 pages 
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