Here are several documents with Andre Rubbia as one of the authors:
hep-ph/0701101 13_Jan__2007 by A. Bueno et al, "Nucleon Decay Searches with Large Liquid Argon TPC Detectors at Shallow Depths: atmospheric neutrinos and cosmogenic backgrounds".
hep-ph/0705.0116v1 1 May_2007 by J.Aysto et al, "Large underground, liquid based detectors for astro-particle physics in Europe: scientific case and prospects".
LAGUNA Design Study, Andre Rubbia coordinating, submitted to European Union FP7 "Design of a pan-European Infrastructure for Large Apparatus studying Grand Unification and Astrophysics".