Parlińska, M., and Łukasz Pietrych. “PROCESS EFFICIENCY SEARCHING AND MATCHING ON THE LABOUR MARKET IN POLAND AND PORTUGAL - COMPARATIVE ANALYSIS”. Acta Scientiarum Polonorum. Oeconomia, vol. 15, no. 4, Dec. 2016, pp. 147-55, https://aspe.sggw.edu.pl/article/view/355.