@article{StulpeBuschHellwig2006,
  author    = {Werner Stulpe and P. Busch and K.-E. Hellwig},
  title     = {Classical Representations of Finite-Dimensional Quantum Mechanics. Busch, P.; Hellwig, K.-E.; Stulpe, W.},
  journal   = {International Journal of Theoretical Physics. 32 (1993), H. 3},
  pages     = {399 -- 405},
  year      = {2006},
}