[Letters to the Editor]

Abstract

THE discovery described above was made by Dr. Penrose in the autumn of 1948. After his tragic death on April 28, 1949, I wrote this note, making use of a draft written by Dr. Penrose while in hospital.

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GORTER, C. [Letters to the Editor]. Nature 163, 992 (1949). https://doi.org/10.1038/163992b0

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