Juan Carlos Ferrando (Operations Research Center, University Miguel Hernández of Elche), Jerzy Kąkol (Faculty of Mathematics and Informatics, A. Mickiewicz University, Poznan), Arkady G. Leiderman (Ben-Gurion University of the Negev, Beer Sheba) and Stephen A. Saxon (Department of Mathematics, University of Florida)
Abstract: Unfortunately, the reference 19 is updated incorrectly in the original article and the reference 19 should be Ferrando, J.C., López-Pellicer, M., Sánchez Ruiz, L.M.: Metrizable Barrelled Spaces. Longman, Harlow (1995). The original article was corrected.