need information about the cwa

hello
i"m interesting in information about the closed world assumption.
i wan to see some material about it's history and it's relation to fuzzy
logic. ontology, nonmonotonic logic, AI etc.
please don't send me to book but to place on the web where i can get
some answers or cocect with a suitable newsgroup
 than'k
iris bareket

iris.bareket@tescom.co.il