1. Isogenies of formal group laws and power operations in the cohomology theories En;Ando;Duke Math. J.,1995
2. Power operations in elliptic cohomology and representations of loop groups;Ando;Trans. Amer. Math. Soc.,2000
3. The sigma orientation is an H∞ map;Ando;Amer. J. Math.,2004
4. T. Bauer, Computation of the homotopy of the spectrum tmf, preprint, available on ArXiv, math. AT/0311328.
5. M.Behrens, D.G. Davis, The homotopy fixed point spectra of profinite Galois extensions, preprint, available at www-math.mit.edu/∼mbehrens.