%0 Journal Article %A G. F. Dell'Antonio %A A. Michelangeli %T From ``fat'' graphs to metric graphs: the problem of boundary conditions %J Nanosistemy: fizika, himiâ, matematika %D 2015 %P 751-756 %V 6 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/NANO_2015_6_6_a1/ %G en %F NANO_2015_6_6_a1