@article{MattilaKoponen1999,
  author    = {P{\"a}ivi Mattila and Timo Koponen},
  title     = {Diversity of bryophyte flora and vegetation on rotten wood in rain and montane forests of northeastern Tanzania},
  journal   = {Tropical bryology},
  number    = {16},
  pages     = {139 -- 164},
  year      = {1999},
}