An interesting, if a bit shallow, article by Antonio on Nebbs of the AltoPiemonte and Valtelline:
Galloni:AltoPiemonte&Valtelline
This article is a further confirmation of my belief that the greatest expressions of Nebbiolo (outside of Calif) are in these two regions. It fails to mention that one of the attractions (to me) of AltoPiemonte Nebbs is that they're often blended w/ Croatina & Vespolina, which lends a richness & texture sorely lacking in Nebbiolo.
Tom