@phdthesis{Shumarova2009,
  author      = {Elitsa Vasileva Shumarova},
  title       = {Authority-based and Bottom-up Diffusion of Collaboration Information Technologies},
  type        = {doctoralthesis},
  pages       = {xxiv, 436, xxv-xxvii},
  school      = {Universit{\"a}t Koblenz-Landau, Campus Koblenz, Universit{\"a}tsbibliothek},
  year        = {2009},
}