Service Engineering: a novel engineering discipline for producers to increase value combining service and product, Sakao, T., and Shimomura Y. , Journal of Cleaner Production, 15 (2007) 6, p.590-604, (2007)

Service Engineering. A New Engineering Discipline for Industries toward Sustainable Consumption., Sakao, T., Hara T., Watanabe K., Shimomura Y., Raggi A., and Petti L. , Tokyo, (2004)