(2012-14; 5,000,000 JPY) Japanese Society for the Promotion of Science Bilateral Program for Joint Research Projects, with H. Okamoto (PI, Japan-side representative, IMS), T. Narushima (IMS), Y. Nishiyama (IMS), K. Imura (Waseda Univ.), H. Mizobata (Waseda Univ.), F. Papoff (UK-side representative), B. Hourahine