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QuoteRef: lienBP6_1978
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Lientz, B.P., Swanson, E.B., Tompkins, G.E., "Chacteristics of application software maintenance", Communications of the ACM, 21, 6, pp. 466-471, June 1978. Google
466 ;;Quote: maintenance and enhancement takes 40-75% of total software effort
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Group: software maintenance (14 topics, 355 quotes)