(2009). . Economic Research and Perspectives, 9(2), 47-72.
. "", Economic Research and Perspectives, 9, 2, 2009, 47-72.
(2009). '', Economic Research and Perspectives, 9(2), pp. 47-72.
, "," Economic Research and Perspectives, 9 2 (2009): 47-72,
. Economic Research and Perspectives, 2009; 9(2): 47-72.
