@article{RSMUP_1976__56__79_0, author = {Artico, Giuliano and Marconi, Umberto}, title = {On the compactness of minimal spectrum}, journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova}, pages = {79--84}, publisher = {Seminario Matematico of the University of Padua}, volume = {56}, year = {1976}, mrnumber = {480463}, zbl = {0381.13003}, language = {en}, url = {http://www.numdam.org/item/RSMUP_1976__56__79_0/} }