Functional quantization and metric entropy for Riemann-Liouville   processes
  We derive a high-resolution formula for the $L^2$-quantization errors of Riemann-Liouville processes and the sharp Kolmogorov entropy asymptotics for related Sobolev balls. We describe a quantization procedure which leads to asymptotically optimal functional quantizers. Regular variation of the eigenvalues of the covariance operator plays a crucial role. 
Harald Luschgy, Gilles Pag\`es (PMA)