About some Regge-like relations for (stable) black holes

We associated, in a classical formulation of 'strong gravity', hadron constituents with suitable stationary, axisymmetric solutions of some new Einstein-type equations supposed to describe the strong field inside hadrons. These new equations can be obtained by the Einstein equations with cosmological term Λ. As a consequence, Λ and the masses Μ result in our theory to be scaled up, and transformed into a 'hadronic constant' and into 'strong masses', respectively. Due to the unusual range of Λ and Μ values considered, we met a series of solutions of the Kerr-Newman-de Sitter (hereafter KNdS) type with rather interesting properties