@phdthesis{Vu2014,
  author      = {Dinh Phuong Vu},
  title       = {Using video study to investigate eighth-grade mathematics classrooms in Vietnam},
  type        = {doctoralthesis},
  pages       = {273},
  school      = {Universit{\"a}t Potsdam},
  year        = {2014},
}