KISIEL, R.; LECH, A.; ZAWIERUCHA, K. 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, v. 10, n. 3, p. 61-72, 30 Sep. 2011.