Exploiting the Normative Aspect of Preference: A Deontic Logic Without Actions.

Allen L. Brown Jr. Surya Mantha Toshiro Wakayama Exploiting the Normative Aspect of Preference: A Deontic Logic Without Actions. 167-203 1993 9 Ann. Math. Artif. Intell. 1-2 db/journals/amai/amai9.html#BrownMW93