1. A. H.Tullo , 3-D printing firms rise to coronavirus challenge, https://cen.acs.org/materials/3-d-printing/3-D-printing-firms-rise/98/web/2020/03
2. D.Stewart , Technology, Media, and Telecommunications Predictions 2019: 3D printing growth accelerates again, https://www2.deloitte.com/content/dam/insights/us/articles/TMT-Predictions_2019/DI_TMT-predictions_2019.pdf
3. S.Karevska , G.Steinberg , A.Müller , R.Wienken , C.Kilger and D.Krauss , 3D printing: hype or game changer?, https://assets.ey.com/content/dam/ey-sites/ey-com/en_gl/topics/advisory/ey-3d-printing-game-changer.pdf
4. D.Lipodio , V.Colombi , G.D'Alessandro and C.Verdiana , The Future of Health Care. Potential, impact and models of 3D printing in the Health Care sector, https://www2.deloitte.com/content/dam/Deloitte/be/Documents/life-sciences-health-care/ThefutureofHealthCare_ENG.pdf
5. R.Geyer , in Plastic Waste and Recycling , ed. T. M. Letcher , Academic Press , 2020 , pp. 13–32