@book{HooftHolsteinMakrietal.2001,
  author    = {Gerard Hooft and Barry Holstein and Nancy Makri and Ismail Duru and Remo Ruffini and Wolfhard Janke and Axel Pelster and Hans-J{\"u}rgen Schmidt and Michael Bachmann},
  title     = {Fluctuating paths and fields : festschrift dedicated to Hagen Kleinert on the occasion of his 60the birthday},
  isbn      = {981-02-4648-X},
  year      = {2001},
}