@phdthesis{Heller2006,
  author    = {Heller, Wilfried},
  title     = {Heller, W., The 'Bohemians' in New Zealand : an ethnik group?; Auckland, Univ., 2005},
  year      = {2006},
  language  = {en}
}
@phdthesis{Heller2006,
  author    = {Heller, Wilfried},
  title     = {Heller, W., The 'Bohemians' in New Zealand : an ethnik group?; Auckland, Univ., 2005},
  year      = {2006},
  language  = {en}
}