“Reviving Decommissioned Ventilators How a Circular Economy Approach Can Assist in Tackling the South African Shortage of Ventilators During Covid-19”. The Thinker 84, no. 2 (June 1, 2020): 40–44. Accessed November 26, 2024. https://journals.uj.ac.za/index.php/The_Thinker/article/view/292.