@inproceedings{
    Luyssaert2006,
    editor = "Eichhorn, J.",
    author = {Luyssaert, Sebastiaan and Sulkava, Mika and Raitio, Hannu and Hollm\'en, Jaakko and Meril\"a, P\"aivi},
    optnumber = "",
    responsibleperson = "Jaakko Hollm\'en",
    title = "Is {N} and {S} deposition altering the mineral nutrient composition of Norway spruce and Scots pine needles in Finland?",
    booktitle = "Proceedings of Symposium: Forests in a Changing Environment -- Results of 20 years ICP Forests Monitoring",
    optaddress = "",
    optnote = {G\"ottingen, Germany},
    optpublisher = "",
    month = "October",
    optannote = "",
    optorganization = "",
    year = "2006",
    optvolume = "",
    pages = "80--81",
    optseries = ""
}