Urza, C. Solitude, c1993: CIP galley (Néstor Basterretxea)

Plazaola, J. Néstor Basterrechea, 1975.

Diccionario de pintores y escultores españoles del siglo XX, 1994: v. 2, p. 361, etc. (Basterretxea Arzadun, Néstor; b. Bermeo, Vizcaya, 1924; sculptor; lived in exile with family from 1936-1952 in France and Buenos Aires; returned to Spain in 1952)

Spanish artists from the fourth to the twentieth century, c1993: v. 1, p. 110-111 (Basterretxea Arzadun, Néstor; Basterrechea Arzadun, Néstor; b. 1924)

El país WWW site, July 14, 2014 (in obituary dated July 12, 2014: Néstor Basterretxea; Néstor Basterretxea Arzadun; b. May 6, 1924, Bermeo, Bizkaia; d. early this morning [July 12, 2014] at his home in Hondarribia, Gipuzkoa, at age 90; sculptor, painter and film director)

Union list of artist names; The dictionary of art, 1996