Very fast magic angle spinning 1H-14N 2D solid-state NMR: Sub-micro-liter sample data collection in a few minutes Y. Nishiyama, Y. Endo, T. Nemoto, H. Utsumia, K. Yamauchi, K. Hioka, Tetsuo Asakura,J. Magn. Reson., 2011, 208, 44http://www.…