@article{article, title  = {{The sigma orientation is an H <inf>∞</inf> map}},

 url = {{}},

 year = {{2004}},

 month = {{1}},

 author = {{Ando M and Hopkins MJ and Strickland NP}},

 volume = {{126}},

 journal = {{American Journal of Mathematics}},

 issue = {{2}},

 pages = {{247-334}},

 note = {{Accessed on 2024/12/26}}}