نتایح جستجو

سلام لطف کنید http://www.tandfonline.com/doi/abs/10.1080/00914030108039782

slm http://www.sciencedirect.com/science/article/pii/S0008884604003138 http://www.sciencedirect.com/science/article/pii/S0143749606000789

سلام بی زحمت .. http://www.sciencedirect.com/science/article/pii/S0261306908003865 http://www.sciencedirect.com/science/article/pii/S0169131712001317