By Kristen di Gennaro in Journal of Basic Writing, v 27(1), p. 61-79, 2008. This page, from the ERIC database, includes an abstract for this article. The article itself is subscription only. Please check with your local library for more assistance.
There was a discussion of Generation 1.5 (vis a vis ESL) in the Pedagogy Cafe, and a Jammer posted a link to an article on the topic in Journal of Basic Writing.