Kostopoulos, G. K. (February 1989). “Quality graphics for daisy-wheel word processing”. IEEE Transactions on Consumer Electronics (IEEE) 35 (1): 16–23. doi:10.1109/30.24649. ISSN0098-3063.
Kostopoulos, G. K. (February 1989). “Quality graphics for daisy-wheel word processing”. IEEE Transactions on Consumer Electronics (IEEE) 35 (1): 16–23. doi:10.1109/30.24649. ISSN0098-3063.