TY  - JOUR
AU  - Gorton, R.
TI  - $A$-systems
JO  - Compositio Mathematica
PY  - 1976
SP  - 3
EP  - 13
VL  - 33
IS  - 1
PB  - Noordhoff International Publishing
UR  - http://www.numdam.org/item/CM_1976__33_1_3_0/
LA  - en
ID  - CM_1976__33_1_3_0
ER  -