Exploring Services Science 6th International Conference, IESS 2015, Porto, Portugal, February 4-6, 2015, Proceedings Nóvoa, Henriqueta Heftet / 2015 / Engelsk
Exploring Service Science 10th International Conference, IESS 2020, Porto, Portugal, February 5–7, 2020, Proceedings Nóvoa, Henriqueta Heftet / 2020 / Engelsk
Exploring Services Science 7th International Conference, IESS 2016, Bucharest, Romania, May 25-27, 2016, Proceedings Borangiu Theodor Heftet / 2016 / Engelsk
Exploring Services Science 4th International Conference, IESS 2013, Porto, Portugal, February 7-8, 2013, Proceedings e Cunha, João Falcão Heftet / 2013 / Engelsk
