Issue No.09 - September (1975 vol.8)
E. Lennemann , IBM
Impact line printers have become the most important peripheral devices for generating readable output from digital computer information.
E. Lennemann, W. Sakmann, "Impact Line Printing: Improvement of a Proven Technology", Computer, vol.8, no. 9, pp. 16-27, September 1975, doi:10.1109/C-M.1975.219071