@article{ArthurErmolievKaniovskii1983,
  author  = {Arthur, W. Brian and Ermoliev, Yuri M. and Kaniovskii, Yuri M.},
  title   = {A Generalized Urn Problem and Its Applications},
  journal = {Cybernetics},
  year    = {1983},
  volume  = {19},
  number  = {1},
  pages   = {61--71},
  doi     = {10.1007/BF01070110}
}