William M. van Cleemput. An hierarchical language for the structural description of digital systems. In Judith G. Brinsfield, Stephen A. Szygenda, David W. Hightower, editors, Proceedings of the 14th Design Automation Conference, DAC '77, New Orleans, Louisiana, USA, June 20-22, 1977. pages 377-385, ACM, 1977. [doi]
Abstract is missing.