Jef Verheyen, De wet van de Piramide van Cheops AB = BC (1,618). Text, ink and pencil on paper, A4.
Jef Verheyen, Sammlung Lenz, • 0095 • Arc-en-Ciel A/B=B/C (ed. 10), 1963. Multiple, metal, chromed aluminium, four parts, 10 x 10 x 3,5 cm each, 20 x 20 x 3,5 cm as a total.
Jef Verheyen, Royal Academy of Fine Arts Antwerp, • 0656 • A/B = B/C, 1965-1966. Painting, oil paint on canvas, varnished, 90 x 90 cm each, diptych.
Jef Verheyen, • 0461 • Biennale de la critique A/B = B/C, 1962. Painting, matt lacquer on canvas, 130 x 130 cm.