@unpublished{Alsaedy2016,
  author  = {Ammar Alsaedy},
  title   = {Variational primitive of a differential form},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprints des Instituts f{\"u}r Mathematik der Universit{\"a}t Potsdam},
  number    = {5 (2016) 4},
  pages     = {8},
  year    = {2016},
}