The Hopf Algebra Structure of the Complex Bordism of the Loop Spaces of the Special Orthogonal Groups V. Gopala Rao Indiana University Mathematics Journal 1989 text pdf 10.1512/iumj.1989.38.38014 10.1512/iumj.1989.38.38014 en Indiana Univ. Math. J. 38 (1989) 277 - 291 state-of-the-art mathematics http://iumj.org/access/