Document Type : Research Paper
Author
.
., .. (2004). . Economics Research, 4(14), 131–148.
., .. ".", Economics Research, 4, 14, 2004, 131–148.
., .. (2004). '.', Economics Research, 4(14), pp. 131–148.
., .., ".." Economics Research, 4 14 (2004): 131–148,
. .. . Economics Research. 2004;4(14):131–148 (In Persian).
