Document Type : Research Paper
Author
.
., .. (2002). . Economics Research, 2(6), 171–184.
., .. ".", Economics Research, 2, 6, 2002, 171–184.
., .. (2002). '.', Economics Research, 2(6), pp. 171–184.
., .., ".." Economics Research, 2 6 (2002): 171–184,
. .. . Economics Research. 2002;2(6):171–184 (In Persian).
