JONES, N. D. Complexity of some Problems Concerning L Systems. (Preliminary report). DAIMI Report Series, [S. l.], v. 5, n. 67, 1976. DOI: 10.7146/dpb.v5i67.6485. Disponível em: https://tidsskrift.dk/daimipb/article/view/6485. Acesso em: 8 may. 2024.