Space-time evolution induced by spinor fields with canonical and non-canonical kinetic terms Tomohiro Inagaki, Yury Rybalov and Xinhe Meng Eur. Phys. J. C, 71 6 (2011) 1656 Published online: 02 June 2011 DOI: 10.1140/epjc/s10052-011-1656-8