The Bell System Technical Journal, volume 50 no. 8, October 1971.
AT&T, October 1971, pp 2495 - 2856 inclusive, references, diagrams.
AT&T, October 1971, pp 2495 - 2856 inclusive, references, diagrams.
Plenum Press, NY and London, 1969; 351 pages, Index.
Organisation for Economic Co-operation and Development, Paris 1962; 83 pages.
John Wiley & Sons NY 1970, first edition; 338 pages, Index, photos, Annotated Bibliography, diagrams.