1. Schaible, S., andIbaraki, T.,Fractional Programming, European Journal of Operational Research, Vol. 12, pp. 325?338, 1983.
2. Craven, B. D.,Fractional Programming, Heldermann-Verlag, Berlin, Germany, 1988.
3. Lasdon, L. S.,Optimization Theory for Large Systems, Macmillan, London, England, 1970.
4. Barrodale, I.,Best Rational Approximation and Strict Quasiconvexity, SIAM Journal on Numerical Analysis, Vol. 10, pp. 8?12, 1973.
5. Schaible, S.,Fractional Programming, Zeitschrift für Operations Research, Vol. 27, pp. 39?54, 1983.