@article{paperid:1014069, author = {Daneshvar Kakhki, Mahmoud and Shahnoushi Froshani, Naser and , }, title = {The Determination of Optimal Crop Pattern with Aim of Reduction in Hazards of Environmental}, journal = {American Journal of Agricultural and Biological Science}, year = {2009}, volume = {4}, number = {4}, month = {December}, issn = {1557-4989}, pages = {305--310}, numpages = {5}, keywords = {Cropping pattern; fuzzy multi-objective fractional programming; linear programming; net return; water; fertilizer}, }