Value chain from good to great : multiple-case study of Estonian companiesMännasoo, Kadri; Rungi, Mait2018 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM 2018) : Bangkok, Thailand, 16-19 December 20182018 / p. 1274-1278 : ill http://dx.doi.org/10.1109/IEEM.2018.8607437