There are three chapters relating to Italian:
Chapter 3 is a detailed description of the path learners of Italian follow when learning it as a L2,
Chapter 8 discusses the acquisition of content questions and
Chapter 10 follows the first steps of a child with Autistic Spectrum disorder in learning Italian L2.
Also of interest for anyone teaching ESL, there is a chapter on English and there is a chapter for Japanese German, Spanish, Russian and Serbian.
This book can be downloaded from the link below:
http://www.eurosla.org/eurosla-monograph-series-2/eurosla-monographs-03/. It is free of charge