Álvarez Gil, R., and Árpád Makay. “Parallel Programming Structures and Attribute Grammars”. Acta Cybernetica 9, no. 2 (January 1, 1989): 133–141. Accessed May 12, 2025. https://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/3361.