A hierarchy of high order languages for systems programming
Don M. Lyle · 1971
The programming of systems software in higher level languages has been a subject of much interest and debate. At Burroughs the debatability of the issue has long since ceased to exist since both the operating system and the compilers for the B5500 were successfully implemented in variants of ALGOL 60. The low manpower requirements and the ease of maintenance and modification have caused all concerned with the project to accept this approach without question. This technique has the added benefit of producing more reliable software due to the greatly reduced number of lines of code required.