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Cooper, S. B.; Slaman, T. A.; Wainer, S. S. . (1996). Computability, Enumerability, Unsolvability (Directions in recursion theory) || Degrees of generic sets. , 10.1017/CBO9780511629167(), 167–184. doi:10.1017/cbo9780511629167.009 
10.1017/cbo9780511629167.009