I have put the files of my articles in Mediafire : *The Shadow And Penumbra Of A Rectilinear Element"* in http://www.mediafire.com/?9dmzgtm3fd1
*Le Proprietá dell'ombra – Aspetti Gnomonici (The Shadow's propreties – Gnomonic Aspects (in Italian) in :* http://www.mediafire.com/?6ys1mnztowm ** *Propriétés de l'ombre* (in French) in : http://www.mediafire.com/?92ssnp6tfen Gianni Ferrari
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