"GERAK"
Verso signed Baertling and dated 1963. Canvas 81 x 130 cm.
Lorenzelli Arte, Milano.
Galerie Konstruktiv Tendens, Stockholm.
Private collection, Sweden.
Konstruktiv Tendens, Stockholm, Geometrisk Abstraktion VIII, November-December, 1989.
Konstakademien, Baertling, 1990, not part of the exhibition but ill in the exhibition catalogue.
men avbildad i katalogen.
Teddy Brunius, "Baertling - mannen - verket", SAKs publ 99, ill fullpage in colour p. 96.