Local polarization of tightly focused unpolarized light

@inproceedings{Lindfors2007LocalPO,
  title={Local polarization of tightly focused unpolarized light},
  author={Klas Lindfors and Arri Priimagi and Tero Set{\"a}l{\"a} and A. Shevchenko and Thomas A Friberg and Matti Kaivola},
  year={2007}
}