TY  - JOUR
AU  - Friedman, Sy D.
TI  - The Π¹₂-singleton conjecture
JO  - Journal of the American Mathematical Society
PY  - 1990
SP  - 771
EP  - 791
VL  - 03
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1990-1071116-6/
DO  - 10.1090/S0894-0347-1990-1071116-6
ID  - 10_1090_S0894_0347_1990_1071116_6
ER  -