A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2004; you can also visit the original URL.
The file type is application/pdf.
Nancy A. Lynch, Edward K. Blum. "Efficient reducibility between programming systems (Preliminary Report)." Proceedings of the ninth annual ACM symposium on Theory of computing - STOC '77 (1977) 228-238