Instructions for use Title On the stable cohomology algebra of extended mapping class groups for surfaces Author(s) Kawazumi, N. Citation Hokkaido University Preprint Series in Mathematics, 311, 1-13 Issue Date 1995-10-1 DOI 10.14943/83458 Doc URL http://hdl.handle.net/2115/69062 Type bulletin (article) File Information pre311.pdf Hokkaido University Collection of Scholarly and Academic Papers : HUSCAP