@phdthesis{Verma2013,
  author    = {Verma, Meetu},
  title     = {The evolution and decay of sunspots : a hight-resolution study of flows and magnetic fields in and around sunspots},
  address   = {Potsdam},
  pages     = {112 S.},
  year      = {2013},
  language  = {en}
}