Benio, M. On Demographic Changes, Retirement Age, Prolongation and Gradual Reduction of the Poles’ Economic Activity, and the Threat of Social Exclusion of the Elderly: An Interview With Professor Maciej Żukowski, the President of the Polish Social Insurance Association, and the Pro-Vice-Chancellor for Science and International Cooperation of the Poznań Economic University. PG 2013, 20 (2), 77-82.