[Armstrong, J.S., and Overton, T.S. (1977). Estimating Nonresponse Bias in Mail Surveys. Journal of Marketing, 14 (3), 396-402.]Search in Google Scholar
[Bratianu, C. (2007). Thinking patterns and knowledge dynamics. In Martins, B. and Remenyi, D. (Eds.). Proceedings of the 8th European Conference on Knowledge Management, 6-7 September 2007. Consorci Escola Industrial de Barcelona, Barcelona, Spain (pp. 152-157). Reading: Academic Conferences.]Search in Google Scholar
[Bratianu, C. (2009). The frontier of linearity in the intellectual capital metaphor. In Stam, C. and Andriessen, D. (Eds.). Proceedings of the European Conference on Intellectual Capital (pp.97-103). Inholland University of Applied Sciences, Haarlem, The Netherlands, 28-29 April 2009. Reading: Academic Conferences and Publishing International.]Search in Google Scholar
[Bratianu, C. and Bolisani, E. (2015). Knowledge strategies: an integrated approach for managing uncertainty. In Massaro, M. and Garlatti, A. (Eds.). Proceedings of the 16th European Conference on Knowledge Management, University of Udine, Italy, 3-4 September 2015 (pp. 169-177). Reading: Academic Conferences and Publishing International.]Search in Google Scholar
[Ellen Macarthur Foundation (2014). Towards the Circular Economy, vol. 3: Accelerating the scale-up across global supply chains. Cowes: Ellen Macarthur Foundation.]Search in Google Scholar
[European Commission (2015). Closing the loop: an EU action plan for the circular economy, Communication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions. doi:10.1017/CBO9781107415324.004.]Search in Google Scholar
[European Environmental Agency (2016). Circular economy in Europe. Developing the knowledge base. doi:10.2800/51444.]Search in Google Scholar
[Fonseca, L.M. and Domingues, J.P., (2017). How to succeed in the digital age? Monitor the organizational context, identify risks and opportunities, and manage change effectively. Management & Marketing. Challenges for the Knowledge Society, 12(3), 443-455. DOI: 10.1515/mmcks-2017-0027.10.1515/mmcks-2017-0027]Open DOISearch in Google Scholar
[Fonseca, L. (2015). ISO 14001:2015: An improved tool for sustainability. Journal of Engineering and Management, 8(1), 37-50.]Search in Google Scholar
[Domingues, J.P.T, Sampaio, P. and Arezes, P.M. (2015). Analysis of integrated management systems from various perspectives. Total Quality Management and Business Excellence, 26(11-12), 1311-1334.10.1080/14783363.2014.931064]Search in Google Scholar
[Domingues, J.P.T, Sampaio, P. and Arezes, P.M. (2017). Analysis of certified occupational health and safety management systems in Portugal. International Journal of Occupational and Environmental Safety, 1(1), 11-28.10.24840/2184-0954_001.001_0002]Search in Google Scholar
[Ghisellini, P., Cialani, C. and Ulgiati, S. (2016). A review on circular economy: the expected transition to a balanced interplay of environmental and economic systems. Journal of Cleaner Production, 114, 11-32.10.1016/j.jclepro.2015.09.007]Search in Google Scholar
[Geissdoerfer, M., Savaget, P., Bocken, N.P.M. and Hultink, E.J. (2017). The Circular Economy - A new sustainability paradigm?. Journal of Cleaner Production, 143, 757-768.10.1016/j.jclepro.2016.12.048]Search in Google Scholar
[Lakatos, E.S., Dan, V., Cioca, L.I., Bacali, L. and Ciobanuet, A.M. (2016). How Supportive Are Romanian Consumers of the Circular Economy Concept: A Survey. Sustainability - MDPI, 08(8).789.10.3390/su8080789]Search in Google Scholar
[Heshmati, A., 2016. A Review of the Circular Economy and its Implementation, Working Paper Series in Economics, and Institutions of Innovation. Royal Institute of Technology, CESIS - Centre of Excellence for Science and Innovation Studies.10.2139/ssrn.2713032]Search in Google Scholar
[Yong, L. and Bai, Y. (2016). An exploration of firms’ awareness and behavior of developing circular economy: An empirical research in China. Resources, Conservation and Recycling, 87, 145-152.]Search in Google Scholar
[Lieder, M. and Rashid, A., (2016). Towards circular economy implementation: A comprehensive review in context of manufacturing industry. Journal Cleaner Production. 115, 36-51. doi:10.1016/j.jclepro.2015.12.042.]Search in Google Scholar
[Murray, A., Skene, K. and Haynes, K. (2017). The Circular Economy: An Interdisciplinary Exploration of the Concept and Application in a Global Context. Journal Business Ethics, 140, 369-380.10.1007/s10551-015-2693-2]Search in Google Scholar
[Nulty, D.D. (2008). The adequacy of response rates to online and paper surveys: what can be done? Assessment & Evaluation in Higher Education, 33 (3), 301-314.10.1080/02602930701293231]Search in Google Scholar
[Pearce, D.W. and Turner, R.K. (1990). Economics of natural resources and the environment, John Hopkins University Press. Elsevier.]Search in Google Scholar
[Sauvé, S., Bernard, S. and Sloan, P., (2016). Environmental sciences, sustainable development and circular economy: Alternative concepts for trans-disciplinary research. Environmental Development, 17, 48-56. doi:10.1016/j.envdev.2015.09.002]Search in Google Scholar
[Zhijun, F., and Nailing, Y. (2007). Putting a circular economy into practice in China. Sustainability Science, 2(1), 95-101. doi:10. 1007/s11625-006-0018-1.]Search in Google Scholar