TY  - JOUR
AU  - Wolfgang Rump
AU  - Yi Chuan Yang
TI  - The essential cover and the absolute cover
 of a schematic space
JO  - Colloquium Mathematicum
PY  - 2009
SP  - 53
EP  - 75
VL  - 114
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm114-1-6/
DO  - 10.4064/cm114-1-6
LA  - en
ID  - 10_4064_cm114_1_6
ER  -