Columbia subject headings:
Art and mental illness--Congresses.
Art brut--Congresses.
Art brut--Exhibitions.
Cei, Fabio--Art collections--Exhibitions.
Outsider art--Congresses.
Outsider art--Exhibitions.
Harvard subject headings:
Art brut--Europe--Exhibitions.
Art--Private collections--Italy--Exhibitions
Collezione Fabio e Leo Cei--Exhibitions.
Outsider art--Europe--Exhibitions.
Princeton subject headings:
Art and mental illness--Congresses.
Art brut--Congresses.
Art brut--Exhibitions.
Cei, Fabio--Art collections--Exhibitions.
Outsider art--Congresses.
Outsider art--Exhibitions.