@phdthesis{Lazik1992,
  author      = {Dieter Lazik},
  title       = {Entwicklung eines neuen Verfahrens zur Extension der Wirbels{\"a}ule},
  type        = {doctoralthesis},
  pages       = {99 Bl. : Ill. + Thesen (1 Ex.)},
  year        = {1992},
}