@misc{PfaeffleStephan2012,
  author    = {Frank Pf{\"a}ffle and Christoph A. Stephan},
  title     = {The holst action by the spectral action principle (vol 307, pg 261, 2011)},
  booktitle = {Communications in mathematical physics},
  volume    = {313},
  number    = {1},
  issn      = {0010-3616},
  doi       = {10.1007/s00220-012-1507-y},
  institution = {Institut f{\"u}r Mathematik},
  type      = {other},
  pages     = {291 -- 292},
  year        = {2012},
}