TY  - JOUR
AU  - I. M. Singer
TI  - Future extensions of index theory and elliptic operators
JO  - Matematika
PY  - 1974
SP  - 52
EP  - 61
VL  - 18
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAT_1974_18_1_a1/
LA  - ru
ID  - MAT_1974_18_1_a1
ER  -