The Journal of Symbolic Logic
We prove that there exists a noncomputable c.e. real which is low for weak 2-randomness, a definition of randomness due to Kurtz, and that all reals which are low for weak 2-randomness are low for Martin-Lof randomness.
Downey, Rod; Nies, Andre; Rebecca Weber; and Liang Yu, "Lowness and Π nullsets" (2006). Open Dartmouth: Faculty Open Access Articles. 2363.