1. Oxford Logic Guides;A. Nies,2009
2. Greenberg, N., Nies, A.: Benign cost functions and lowness properties (to appear)
3. Kučera, A., Nies, A.: Demuth randomness and computational complexity (to appear 20xx)
4. Jockusch Jr., C., Soare, R.: Degrees of members of
${\Pi \sp{0}\sb{1}}$
classes. Pacific J. Math. 40, 605–616 (1972)
5. Franklin, J.N., Ng, K.M.: Difference randomness. In: Proceedings of the American Mathematical Society (to appear)