%0 Journal Article %T Variations in cosmic ray cutoff rigidities during the greatgeomagnetic storm of November 2004 %A Tyasto, M.I. %A Danilova, O.A. %A Ptitsyna, N.G. %A Sdobnov, V.E. %K cosmic rays, cutoff rigidity, magnetic storms, magnetospheric model %J Solnechno-Zemnaya Fizika %D 2015 %N 1 %P 8 %I INFRA-M Academic Publishing LLC.