Walther-Bense, E. The relations of Haroldo de Campos to german concretist poets, in paricular to Max Bense: Elisabeth Walther-Bense. Experimental - visual - concrete : Avant-Garde Poetry since the 1960s.(1996).
Lua i Stíl Chicago (17ú heag.)Walther-Bense, Elisabeth. "The Relations of Haroldo De Campos to German Concretist Poets, in Paricular to Max Bense: Elisabeth Walther-Bense." Experimental - Visual - Concrete : Avant-Garde Poetry Since the 1960s.(1996) .
Lua MLA (8ú heag.)Walther-Bense, Elisabeth. "The Relations of Haroldo De Campos to German Concretist Poets, in Paricular to Max Bense: Elisabeth Walther-Bense." Experimental - Visual - Concrete : Avant-Garde Poetry Since the 1960s.(1996), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.