1
title:An approximate approach to fractional analysis for finance 
author:Tran Hung Tha
source: Nonlinear Analysis: Real World ApplicationsVolume 7, Issue 1, February 2006,Pages 124-132
2
title:An approximate approach to fractional stochastic integration and its applications             
authors: Nguyen Tien Dung and Tran Hung Thao
Source: 
Braz. J. Probab. Stat.               Volume 24, Number 1             (2010), 57-67.