Formal Metalanguage and Formal Theory as Two Aspects of Generative Grammar Sebastian K Saumjan author P A Soboleva author 1973 text COLING 1973 Volume 1: Computational And Mathematical Linguistics: Proceedings of the International Conference on Computational Linguistics conference publication saumjan-soboleva-1973-formal https://aclanthology.org/C73-1006/ 1973