Smithling, Brian D. Max Planck Institute for Mathematics, Max Planck Society;
smithling_on the moduli_oa_2011.pdf (Any fulltext), 667KB
Smithling, B. D. (2011). On the moduli stack of commutative, 1-parameter formal groups. Journal of Pure and Applied Algebra, 215(4), 368-397. doi:10.1016/j.jpaa.2010.04.024.