MathSciNet bibliographic data MR309722 02F40 Jockusch, Carl G., Jr.; Soare, Robert I. Degrees of members of \$\Pi \sp{0}\sb{1}\$$\Pi \sp{0}\sb{1}$ classes. Pacific J. Math. 40 (1972), 605–616. Article

For users without a MathSciNet license , Relay Station allows linking from MR numbers in online mathematical literature directly to electronic journals and original articles. Subscribers receive the added value of full MathSciNet reviews.