Solovay Reducibility on D-c.e Real Numbers.

Robert Rettinger Xizhong Zheng Solovay Reducibility on D-c.e Real Numbers. 359-368 2005 conf/cocoon/2005 COCOON http://dx.doi.org/10.1007/11533719_37 db/conf/cocoon/cocoon2005.html#RettingerZ05