Khoshnevisan, Davar; Xiao, Yimin; Zhong, Yuquan. Measuring the range of an additive Lévy process.
Ann. Probab. 31 (2003), no. 2, 1097--1141. MR1964960 (2004c:60155)
Pruitt, William E. The Hausdorff dimension of the range of a process with stationary
J. Math. Mech. 19 1969/1970 371--378. MR0247673 (40 #936)