TY  - JOUR
AU  - J. Douglas
TI  - Systems of K-dimensional manifolds in an N-dimensional space
JO  - Mathematische Annalen
PY  - 1931
SP  - 707
EP  - 733
VL  - 105
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1931__105_159533/
ID  - MAN_1931__105_159533
ER  -