On Corrado Gini's 1932 paper "Intorno alle curve di concentrazione". A selection of translated excerpts

The main focus of the paper is the study of the concentration curve, with special emphasis on its fundamental features and properties and on the relationship with other relevant curves. One of the most innovative contributions (rediscovered forty years later) is the alternative analytical representation of the concentration curves in a coordinate system which assumes the so-called equidistribution line as x-axis and its perpendicular line as y-axis. Furthermore, the impact of the presence of a superior and/or inferior limit in the variable of interest on the maximum concentration triangle is examined. Suitable correction coefficients are derived for computing the corresponding concentration ratio, that take into account these restrictions.