“…There is the work of Wilkerson & Irwin, (1979) and finally one must mention the Montagne's Ratio Method (Montagne, 1969). We can also quote works of: Eom et al, (2002), the tabu search based method of Armentano and Yamashita, (2000), the three phase method of , the neural network method of Park & Kim, (1997), the work of Radhawa and Kuo, (1997) and also Guinet, (1995). And the former work of Arkin & Roundy, (1991), Luh et al, (1990), Emmons &Pinedo, (1990) andEmmons, (1987).…”