According to Wikipedia,
Michał Kalecki was a Polish Marxian economist. Over the course of his life, Kalecki worked at the London School of Economics, University of Cambridge, University of Oxford and Warsaw School of Economics and was an economic advisor to the governments of Poland, France, Cuba, Israel, Mexico and India. He also served as the deputy director of the United Nations Economic Department in New York City.
Michał Kalecki is affiliated with the following schools: