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Op art - Wikipedia
Op art | Characteristics, Artists, & Facts | Britannica
Op Art Movement Overview | TheArtStory
Op Art: What is Op Art and Famous Works | Artland Magazine
Op Art Artists - 10 Most Famous - Artst
Overview of the Op Art Movement - ThoughtCo
Op Art Movement – History, Artists, and Artwork - Artlex
Bridget Riley and Op Art
Op art - Tate
Op art - MoMA