@article{CTT100653636,
  author = {S. Okuzumi},
  title = {ELECTRIC CHARGING OF DUST AGGREGATES AND ITS EFFECT ON DUST COAGULATION IN PROTOPLANETARY DISKS},
  journal = {Astrophysical Journal},
  year = 2009,
}

@article{CTT100653642,
  author = {S. Okuzumi and H. Tanaka and M. A. Sakagami},
  title = {NUMERICAL MODELING OF THE COAGULATION AND POROSITY EVOLUTION OF DUST AGGREGATES},
  journal = {Astrophysical Journal},
  year = 2009,
}