@article{Iszkuło:2006,
  author  = "G. Iszkuło and A. Boratyński",
  title   = "Analysis of the relationship between photosynthetic photon flux density and natural Taxus baccata seedlings occurrence",
  journal = "Acta Oecologica : International Journal of Ecology",
  volume  = "Vol. 29",
  number  = "iss. 1",
  pages   = "78 84",
  year    = "2006",
}