” In 1937 Stefan Kaczmarz (1895-1939) discovered an iterative algorithm for solving a system of linear equations [Kac37], known as Kaczmarzs algorithm or Kaczmarzs method. The result remained almost unnoticed for over 30 years until the 70th of the 20th century, when it turned out that the method could have a lot of applications in various areas of mathematics as well as many practical application in physics, in medicine and in technical sciences, e.g., in the computerized tomography and in many other imaging technologies” https://www.impan.pl