@article{Fogel:2486,
      author        = "Fogel, J. K. J. and Jacoby, G. H. and Shaw, R. A. and
                       Stanghellini, L. and Van de Steene, G. C. and Dopita, M.",
      title         = "{Probing the Properties of Two Galaxies with Planetary
                       Nebulae}",
      year          = "2002",
}