Kisiel, R., A. Lech, and K. Zawierucha. “SYSTEM OF AGRICULTURAL STRUCTURAL PENSIONS IN POLAND AFTER THE YEAR 2000 BASED ON THE EXAMPLE OF THE SELECTED COUNTIES IN WARMIŃSKO-MAZURSKIE AND MAZOWIECKIE VOIVODSHIPS”. Acta Scientiarum Polonorum. Oeconomia, Vol. 10, no. 3, Sept. 2011, pp. 61-72, https://js.wne.sggw.pl/index.php/aspe/article/view/4022.