Memoirs of the American Mathematical Society ; volume 3, issue 1, number 162 (September 1975)
Print version: Epstein, Richard L. Minimal degrees of unsolvability and the full approximation construction. Providence : American Mathematical Society, [1975] vii, 136 ; 26 cm Memoirs of the American Mathematical Society ; volume 3, issue 1, number 162 (September 1975) ISBN 9780821818626
Originally presented as the author’s thesis, University of California, Berkeley