TY  - JOUR

T1  - The sigma orientation is an H <inf>∞</inf> map

JO  - American Journal of Mathematics

PY  - 2004/01/01

AU  - Ando M

AU  - Hopkins MJ

AU  - Strickland NP

ED  - 

VL  - 126

IS  - 2

SP  - 247

EP  - 334

Y2  - 2024/12/26

ER  -