“…Several approaches of this class have been proposed in the literature, e.g., Fendley (1968), Kurtulus and Davis (1982), Kurtulus and Narula (1985), Dumond and Mabert (1988), Tsubakitani and Deckro (1990), Lawrence and Morton (1993), Wiley et al (1998), Ash (1999), Lova et al (2000), Shankar and Nagi (1996), and Mendes (2003).…”