@article{EliseevaBorozdina2012,
  author    = {Irina Eliseeva and O. Borozdina},
  title     = {Dynamic typology of investment activity of oil companies},
  journal   = {Beitr{\"a}ge zur sektoralen und regionalen {\"O}konomie},
  pages     = {1 -- 7},
  year      = {2012},
}