Columbia subject headings:
Ferrer, Esther, 1937---Criticism and interpretation.
Hidalgo, Juan, 1927-2018--Criticism and interpretation.
Valcárcel Medina, Isidoro, 1937---Criticism and interpretation.
Harvard subject headings:
Princeton subject headings:
Arts--Experimental methods.
Avant-garde (Aesthetics)--Spain.
Ferrer, Esther, 1937---Criticism and interpretation.
Hidalgo, Juan, 1927---Criticism and interpretation.
Valcárcel Medina, Isidoro, 1937---Criticism and interpretation.