@inbook {857432dc891f41c2bd320e1851a489fa,
	title = {OPTATIVE REASONING WITH SCENARIO SEMANTICS},
	booktitle = {MIT Press},
	year = {1993},
	note = {n/a},
	month = {1},
	pages = {601{\textendash}615},
	abstract = {n/a},
	author = {Alferes, {Jos{\'e} J{\'u}lio Alves}}
}
