1. G. W. Anderson, The hyperadelic gamma function, to appear in Inv. Math.
2. G. W.Anderson and Y. Ihara, Pro-i branched coverings of P1 and higher circular i-units, to appear in Ann. of Math.
3. R. Coleman, Ander son-Ihara theory: Gauss sums and circular units, to appear in Adv. Studies in Pure Math. 17.
4. P. Deligne, Letter to S. Bloch, Feb. 2, 1984.
5. H. Ichimura and K. Sakaguchi, The non-vanishing of a certain Kummer character Xm (after C. Soulé) and some related topics, Adv. Studies in Pure Math. 12 (1987), 53–64.