Kurki-Suonio, Reino. “Towards Languages That Support Program Derivation : Or Control Modularity Considered Harmful”. Acta Cybernetica 9, no. 3 (January 1, 1990): 179-192. Accessed March 4, 2024. https://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/3366.