Carlos Llerena Aguirre represented Peru and USA with his woodcuts in the Norsk Internasjonal Grafikk Biennale, Norway. The Jubilam X Internationale Grafik Triennale, Norway and The Xylon Graphische International Triennale, Switzerland. The South Pacific Printmking Biennalel Hulu, Hawai. 5th Biennal of Printmaking, ICPNA. Lima, Peru and the International Bienal of Douro, Portugal. Biennal Arequipa, Peru, Boston Printmaking Biennal. USA