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APA Citation
Ribeiro, P., & Sampaio, A. (Eds.) (2019). Unifying theories of programming : 7th International Symposium, UTP 2019, dedicated to Tony Hoare on the occasion of his 85th birthday, Porto, Portugal, October 8, 2019, Proceedings. Cham, Switzerland : Springer. http://access.bl.uk/ark:/81055/vdc_100089037033.0x000001