Approximation to multifractional Riemann-Liouville Brownian sheet
  In this paper, we first introduce multifrational Riemann-Liouville Brownian sheets. Then, we show a result of approximation in law of the multifractional Riemann-Liouville Brownian sheet. The construction of these approximations is based on a sequence of I.I.D random variables. 
Hongshuai Dai
math.PR