Improved ε expansion in the theory of turbulence: summation of nearest singularities by inclusion of an infrared irrelevant operatorL. T. Adzhemyan, M. Hnatich and J. HonkonenEur. Phys. J. B, 73 2 (2010) 275-285DOI: https://doi.org/10.1140/epjb/e2009-00432-8