Inflaton field governed universe from NKK theory of gravity: stochastic approach M. Anabitarte, J. E. M. Aguilar and M. Bellini Eur. Phys. J. C, 45 1 (2006) 249-256 Published online: 15 January 2006 DOI: 10.1140/epjc/s2005-02404-9