TY  - JOUR
AU  - Heldermann, N. C.
TI  - Developability and Some New Regularity Axioms
JO  - Canadian journal of mathematics
PY  - 1981
SP  - 641
EP  - 663
VL  - 33
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-051-9/
DO  - 10.4153/CJM-1981-051-9
ID  - 10_4153_CJM_1981_051_9
ER  -