@article{StulpeHellwig2006,
  author    = {Werner Stulpe and K.-E. Hellwig},
  title     = {A Classical Reformulation of Finite-Dimensional Quantum Mechanics. Hellwig, K.-E.; Stulpe, W.},
  journal   = {Quantum measurement, irreversibility and the physics of information / Symposium on the Foundations of Modern Physics 1993, Cologne, Germany 1 - 5 June 1993. Ed. Paul Busch},
  pages     = {209 -- 214},
  year      = {2006},
}