Diamantis, Nikolaos Max Planck Institute for Mathematics, Max Planck Society;
Sreekantan, Ramesh Max Planck Institute for Mathematics, Max Planck Society;
Diamantis, N., & Sreekantan, R. (2006). Iterated integrals and higher order automorphic forms. Commentarii Mathematici Helvetici, 81(2), 481-494.