%0 Journal Article %A khorramizadeh, S. M., Esfandyaran, D. %T Orienteering Problem with Variable Profits, Fractional Objective Function and Demand on Arcs %J Journal of New Researches in Mathematics %V 5 %N 3 %P 19-30 %D 1970 %R %U https://sanad.iau.ir/fa/Article/797608