J. R. Shoenheld. Applications of model theory to degrees of unsolvability. The theory of models, Proceedings of the 1963 International Symposium at Berkeley, edited by J. W. Addison, Leon Henkin, and Alfred Tarski, Studies in logic and the foundations of mathematics, North-Holland Publishing Company, Amsterdam1965, pp. 359–363.

1972 ◽  
Vol 37 (3) ◽  
pp. 610-611
Author(s):  
Gerald E. Sacks
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