@phdthesis{Liu2019,
  author      = {Bangjun Liu},
  title       = {The origin of pale and dark layers in Pliocene Jinsuo lignite basin from Yunnan Province, Southwestern China},
  type        = {doctoralthesis},
  pages       = {157},
  school      = {Universit{\"a}tsbibliothek Johann Christian Senckenberg},
  year        = {2019},
}