TY  - JOUR
AU  - Thomason, S. K.
TI  - Sublattices and Initial Segments of the Degrees of Unsolvability
JO  - Canadian journal of mathematics
PY  - 1970
SP  - 569
EP  - 581
VL  - 22
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-064-7/
DO  - 10.4153/CJM-1970-064-7
ID  - 10_4153_CJM_1970_064_7
ER  -