“…Many other hypotheses and means of defining the conditions for an outranking test could be imagined within the framework of OA2 (see, especiaIly, Paelinck, 1978;Roubens, 1982;Hinloopen et al, 1983;Brans et al, 1984;Martel et al , 1986;Matarazzo, 1986Matarazzo, , 1988Brans and Mareschal, 1990).…”