TY  - JOUR
AU  - Espelie, M. Solveig
AU  - Joseph, James E.
TI  - Some Properties of θ-Closure
JO  - Canadian journal of mathematics
PY  - 1981
SP  - 142
EP  - 149
VL  - 33
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-013-8/
DO  - 10.4153/CJM-1981-013-8
ID  - 10_4153_CJM_1981_013_8
ER  -