Editorial
Tài liệu tham khảo
Burstall, R.M. and Darlington, J. Some transformations for developing recursive programs. In Proceedings of the International Conference on Reliable Software, Los Angeles, USA, 1975, pp. 465–472.
Walker, S.A. and Strong, H.R. Characterization of flowchartable recursions. In Proceedings 4th Annual ACM Symposium on Theory of Computing, Denver, CO, USA, 1972.