%0 Journal Article %T Pitch-angle anisotropy and differential rigidity spectra of cosmic rays during GLE on May 2 and 6, 1998 %A Lukovnikova, A.A. %A Sdobnov, V.E. %K cosmic rays, ground level enhancement, anisotropy, rigidity spectrum %J Solar-Terrestrial Physics %D 2022 %N 8 %P 4 %I INFRA-M Academic Publishing LLC.