@article {DJp:rd\&cl,
	title = {Relevant derivability and classical derivability in {F}itch-style and axiomatic formulations of relevant logics},
	journal = {Logique et Analyse},
	volume = {28},
	number = {109},
	year = {1985},
	pages = {21{\textendash}31},
	author = {Batens, Diderik and Van Bendegem, Jean Paul}
}
