@article{SIGMA_2009_5_a52,
     author = {A. D\'ector and H. A. Morales-T\'ecotl and L. F. Urrutia and J. D. Vergara},
     title = {An {Alternative} {Canonical} {Approach} to the {Ghost} {Problem} in {a~Complexified} {Extension} of the {Pais{\textendash}Uhlenbeck} {Oscillator}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2009},
     volume = {5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2009_5_a52/}
}