@phdthesis{typKulaBemba,
  author = {Kula, Nancy Chongo},
  pages  = {xii+220},
  school = {Rijksuniversiteit te Leiden},
  title  = {The phonology of verbal derivation in Bemba},
  url    = {http://www.lotpublications.nl/publish/articles/000233/bookpart.pdf},
  year   = {2002}
}