Abdo H.Dimitrov D.Gutman, Ivan2021-04-202021-04-2020180166-218Xhttps://scidar.kg.ac.rs/handle/123456789/11052© 2018 Elsevier B.V. A natural extension of the well-known Albertson irregularity index is the recently introduced [Formula presented] irregularity index. For a simple graph [Formula presented] with an edge set [Formula presented], the [Formula presented] irregularity index is defined as [Formula presented], where [Formula presented] denotes the degree of the vertex [Formula presented] of [Formula presented]. Here, we characterize general graphs with maximal [Formula presented] irregularity. We also present lower bounds on the maximal [Formula presented] irregularity of graphs with fixed minimal and/or maximal vertex degrees.restrictedAccessarticle10.1016/j.dam.2018.05.0132-s2.0-85047904838