TY  - JOUR
AU  - Anderson, R. D.
TI  - Proper homotopies in $l_2$-manifolds
JO  - Compositio Mathematica
PY  - 1971
SP  - 155
EP  - 157
VL  - 23
IS  - 2
PB  - Wolters-Noordhoff Publishing
UR  - http://www.numdam.org/item/CM_1971__23_2_155_0/
LA  - en
ID  - CM_1971__23_2_155_0
ER  -