When nothing is sure, everything is possible.
Si può fare :)
http://www.deiagra.unibo.it/dottorato-di-ricerca/98-archivio-dottori-e-tesi.html
http://www.linkedin.com/pub/hajnalka-petrics/44/224/538
http://www.fao.org/docrep/017/i3153e/i3153e.pdf
http://www.fao.org/fileadmin/user_upload/Europe/documents/Events_2009/greenweek/GI_Report_2009_en.pdf