%0 Journal Article %A M. H. Brynildsen %A H. D. Cornean %T On spectral gaps in graphene in a weak constant magnetic field %J Nanosistemy: fizika, himiâ, matematika %D 2013 %P 467-473 %V 4 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/NANO_2013_4_4_a1/ %G en %F NANO_2013_4_4_a1