Here is his own account of it, with more detail: https://blogs.futura-sciences.com/e-luminet/2018/03/07/45-years-black-hole-imaging-1-early-work-1972-1988/ http

Here is his own account of it, with more detail: https://blogs.futura-sciences.com/e-luminet/2018/03/07/45-years-black-hole-imaging-1-early-work-1972-1988/ https://blogs.futura-sciences.com/e-luminet/2018/03/07/45-ye...