@inproceedings{1055716,
    title = "Weathering of florentine stones: sulfation and its determination",
    author = "Frediani, Piero and Malesani, Piergiorgio and Vannucci, Sergio",
    year = "1976",
    pages = "117-118",
    booktitle = "2ον Διεθνές συμπόσιον επί της καταστροφής των λίθων είς κατασκευάς. 2me Colloque international sur la détérioration des pierres en oeuvre. 2nd International symposium on the deterioration of building stones"
}