@article {D\&AA,
	title = {Russell{\textquoteright}s Set versus the Universal Set in Paraconsistent Set Theory},
	journal = {Logique et Analyse},
	volume = {25},
	number = {98},
	year = {1982},
	pages = {121{\textendash}133},
	author = {Arruda, Ayda I. and Batens, Diderik}
}
