Following is The New York Times obituary of Wojciech Fangor by William Grimes, November 9, 2015

Wojciech Fangor, one of the most distinctive painters to emerge from postwar Poland, died on Oct. 25 in Warsaw. He was 92.
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His death was confirmed by Prof. Margaret Soltan of George Washington University, a family friend.

Mr. Fangor, who was known for his blurred circles, amoebas and cloud shapes in dense, saturated colors that seemed to throb and swirl, first became known in the United States in the 1960s, when his work was included in two group exhibitions at the Museum of Modern Art in New York. In 1970, he had a one-man show at the Guggenheim Museum.
His work, perched midway between Color Field painting...