The Degrees Below A 1-Generic Degree < 0? - Christine Ann Haught (J. Symb. Log., 1986)

Undecidability and Initial Segments of the R.E. tt-Degrees. - Christine Ann Haught; Richard A. Shore (J. Symb. Log., 1990)

Embedding Lattices into the wtt-Degrees below 0'. - Rodney G. Downey; Christine Ann Haught (J. Symb. Log., 1994)

Automorphisms in the PTIME-Turing Degrees of Recursive Sets. - Christine Ann Haught; Theodore A. Slaman (Ann. Pure Appl. Log., 1997)