Progress of Theoretical PhysicsA Note on the Ursell Function Inequality: --Triangular Composition of Ising Ferromagnets--N. SetoPublished Aug 1, 1978• 0 citationsPublisherAbstractNoriaki Setô; A Note on the Ursell Function Inequality: —Triangular Composition of Ising Ferromagnets—, Progress of Theoretical Physics, Volume 60, Issue 2, 1 ADOI10.1143/ptp.60.631