Some results on the integral geometry of unions of independent families. Dulio, Paolo — 1997 Revista Colombiana de Matemáticas
The converse of Kelly’s lemma and control-classes in graph reconstruction Paolo Dulio; Virgilio Pannone — 2005 Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica We prove a converse of the well-known Kelly’s Lemma. This motivates the introduction of the general notions of 𝒦 -table, 𝒦 -congruence and control-class.