@article{SandevMetzlerTomovski2012,
  author    = {Trifce Sandev and Ralf Metzler and Zivorad Tomovski},
  title     = {Velocity and displacement correlation functions for fractional generalized Langevin equations},
  journal   = {Fractional calculus and applied analysis : an international journal for theory and applications},
  volume    = {15},
  number    = {3},
  pages     = {426 -- 450},
  doi       = {10.2478/s13540-012-0031-2},
  year      = {2012},
}