(2009). . Economic Research and Perspectives, 9(2), 103-122.
. "", Economic Research and Perspectives, 9, 2, 2009, 103-122.
(2009). '', Economic Research and Perspectives, 9(2), pp. 103-122.
, "," Economic Research and Perspectives, 9 2 (2009): 103-122,
. Economic Research and Perspectives, 2009; 9(2): 103-122.
