bibitem{37-43}
S. Abbasbandy and M. Alavi, {it A method for solving fuzzy linear
systems}, Iranian Journal of Fuzzy Systems, textbf{2(2)} (2005),
37-43.
bibitem{19-32}
T. Allahviranloo, F. H. Lotfi, M. K. Kiasary, N. A. Kiani and L.
Alizadeh, {it Solving fully fuzzy linear programming problem by the
ranking function}, Applied Mathematical Sciences, {bf
2}textbf{(1)} (2008), 19-32.
bibitem{141-164}
R. E. Bellman and L. A. Zadeh, {it Decision making in a fuzzy
environment}, Management Science, {bf 17}textbf{(4)} (1970),
141-164.
bibitem{277-287}
U. Bhattacharya, J. R. Rao and R. N. Tiwari, {it Fuzzy
multi-criteria facility location problem}, Fuzzy Sets and Systems,
{bf 51}textbf{(3)} (1992), 277-287.
bibitem{1993}
U. Bhattacharya, J. R. Rao and R. N. Tiwari, {it Bi-criteria multi
facility location problem in Fuzzy environment}, Fuzzy Sets and
Systems, textbf{56}textbf{(2)} (1993), 145-153.
bibitem{35-53}
J. Buckley and T. Feuring, {it Evolutionary algorithm solution to
fuzzy problems: fuzzy linear programming}, Fuzzy Sets and Systems,
textbf{109}textbf{(1)} (2000), 35-53.
bibitem{1751-1763}
R. Caballero, M. Gonzalez, F. M. Guerrero, J. Molina and C.
Paralera, {it Solving a multiobjective location routing problem
with a metaheuristic based on tabu search: application to a real
case in Andalusia}, European Journal of Operational Research,
textbf{177}textbf{(3)} (2007), 1751-1763.
bibitem{1-21}
J. M. Cadenas and J. L. Verdegay, {it A primer on fuzzy
optimization models and methods}, Iranian Journal of Fuzzy Systems,
textbf{3(1)} (2006), 1-21.
bibitem{145-153}
L. M. Campos Ibanez and A. Gonzalez Munoz, {it A subjective
approach for ranking fuzzy number}, Fuzzy Sets and Systems,
textbf{29}textbf{(2)} (1989), 145-153.
bibitem{1-11}
L. Campos and J. L. Verdegay, {it Linear programming problems and
ranking of fuzzy numbers}, Fuzzy Sets and Systems,
textbf{32}textbf{(1)} (1989), 1-11.
bibitem{1289-1297}
S. P. Chen and Y. J. Hsueh, {it A simple approach to fuzzy critical
path analysis in project networks}, Applied Mathematical
Modelling, textbf{32}textbf{(7)} (2008), 1289-1297.
bibitem{687-702}
T. C. Chu, {it Facility location selection using fuzzy TOPSIS under
group decisions}, International Journal of Uncertainty, Fuzziness
and Knowledge-Based Systems, textbf{10}textbf{(6)} (2002),
687-702.
bibitem{331-343}
L. Cooper, {it Location-allocation problems}, Operations Research, textbf{11}textbf{(3)} (1963),
331-343.
bibitem{149-154}
J. Darzentas, {it A discrete location model with fuzzy
accessibility measures}, Fuzzy Sets and Systems,
textbf{23}textbf{(1)} (1987), 149-154.
bibitem{1689-1709}
R. Z. Farahani, M. SteadieSeifi and N. Asgari, {it Multiple
criteria facility location problems: a survey}, Applied Mathematical
Modelling, textbf{34}textbf{(7)} (2010), 1689-1709.
bibitem{305-315}
K. Ganesan and P. Veeramani, {it Fuzzy linear programs with
trapezoidal fuzzy Numbers}, Annals of Operations Research,
textbf{143}textbf{(1)} (2006), 305-315.
bibitem{799-809}
M. Gen and A. Syarif, {it Hybrid genetic algorithm for multi-time
period production/distribution planning}, Computers and Industrial
Engineering, textbf{48}textbf{(4)} (2005), 799-809.
bibitem{190-206}
F. Glover, {it Tabu search-part I}, ORSA Journal on Computing,
textbf{1}textbf{(3)} (1989), 190-206.
bibitem{4-32}
F. Glover, {it Tabu search-part II}, ORSA Journal on Computing,
textbf{2}textbf{(1)} (1990), 4-32.
bibitem{21-35}
T. S. Hale and C. R. Moberg, {it Location science research: a review}, Annals of Operations Research,
textbf{123}textbf{(1-4)} (2003), 21-35.
bibitem{135-153}
C. Kahraman, D. Ruan and I. Dogan, {it Fuzzy group decision-making
for facility location selection}, Information Sciences,
textbf{157} (2003), 135-153.
bibitem{1991}
A. Kaufmann and M. M. Gupta, {it Introduction to fuzzy arithmetics:
theory and applications}, New York, Van Nostrand Reinhold, 1991.
bibitem{143-150}
K. Kim and K. S. Park, {it Ranking fuzzy number with index of
optimism}, Fuzzy Sets and Systems, textbf{35}textbf{(2)} (1990),
143-150.
bibitem{1833-1849}
C. K. Y. Lin and R. C. W. Kwok, {it Multi-objective metaheuristics
for a location-routing Problem with multiple use of vehicles on real
data and simulated data}, European Journal of Operational Research,
textbf{175}textbf{(3)} (2006), 1833-1849.
bibitem{601-606}
F. T. Lin, {it Time-cost tradeoff in fuzzy critical path analysis
based on $(1-alpha)times 100%$ confidence-interval estimates},
IEEE International Conference on Systems, Man and Cybernetics,
(2008), 601-606.
bibitem{247-255}
T. S. Liou and M. J. Wang, {it Ranking fuzzy numbers with integral
value}, Fuzzy Sets and Systems, textbf{50}textbf{(3)} (1992),
247-255.
bibitem{206-216}
N. Mahdavi-Amiri and S. H. Nasseri, {it Duality in fuzzy number
linear programming by the use of a certain linear ranking function},
Applied Mathematics and Computation, textbf{180}textbf{(1)} (2006),
206-216.
bibitem{643-659}
G. S. Mahapatra and T. K. Roy, {it Fuzzy multi-objective
mathematical programming on reliability optimization model}, Applied
Mathematics and Computation, textbf{174(1)} (2006), 643-659.
bibitem{35-45}
H. R. Maleki and M. Mashinchi, {it Multiobjective geometric
programming with fuzzy parameters}, International Journal of
Information Science and Technology, textbf{5(2)} (2007), 35-45.
bibitem{21-33}
H. R. Maleki, M. Tata and M. Mashinchi, {it Linear programming with
fuzzy variables}, Fuzzy Sets and Systems, textbf{109(1)} (2000),
21-33.
bibitem{401-412}
M. T. Melo, S. Nickel and F. Saldanha-da-Gama, {it Facility
location and supply chain management-a review}, European Journal
of Operational Research, textbf{196(2)} (2009), 401-412.
bibitem{9-20}
H. Mishmast Nehi, H. R. Maleki and M. Mashinchi, {it Solving fuzzy
number linear programming problem by lexicographic ranking
function}, Italian J. Pure Appl. Math., textbf{16} (2004), 9-20.
bibitem{618-628}
R. Narasimhan, {it A fuzzy subset characterization of a
site-selection problem}, Decision Sciences, textbf{10(4)} (1979),
618-628.
bibitem{1469-1480}
A. A. Noora and P. Karami, {it Ranking functions and its
application to fuzzy DEA}, International Mathematical Forum,
textbf{3(30)} (2008), 1469-1480.
bibitem{129-140}
S. Okada and T. Soper, {it A shortest path problem on a network
with fuzzy arc lengths}, Fuzzy Sets and Systems,
textbf{109(1)} (2000), 129-140.
bibitem{79-90}
P. Pandian and G. Natarajan, {it A new algorithm for finding a
fuzzy optimal solution for fuzzy transportation problems}, Applied
Mathematical Sciences, textbf{4(2)} (2010), 79-90.
bibitem{449-460}
S. Prakash, M. K. Sharma and A. Singh, {it Selection of warehouse
sites for clustering ration shops to them with two objectives
through a heuristic algorithm incorporating tabu search}, Opsearch,
textbf{46(4)} (2010), 449-460.
bibitem{76-84}
T. Uno and H. Katagiri, {it Single and multi-objective defensive
location problems on a network}, European Journal of Operational
Research, textbf{188(1)} (2008), 76-84.
bibitem{360-365}
J. R. Yu and T. H. Wei, {it Solving the fuzzy shortest path
problem by using a linear programming}, Journal of the Chinese
Institute of Industrial Engineers, textbf{24(5)} (2007), 360-365.
bibitem{338-353}
L. A. Zadeh, {it Fuzzy sets}, Information and Control,
textbf{8(3)} (1965), 338-353.
bibitem{45-55}
H. J. Zimmermann, {it Fuzzy programming and linear programming with
several objective functions}, Fuzzy Sets and Systems,
textbf{1(1)} (1978), 45-55.
)