@article{etna_vol36_pp1-8,
  author  = {Walter Gautschi},
  title   = {How sharp is Bernstein's inequality for Jacobi polynomials?},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {36},
  year    = {2009-2010},
  pages   = {1--8},
}