TY - JOUR AU - Matsuda, Shigeki TI - $\pi$-exponentials for generalized twisted ramified Witt vectors JO - Rendiconti del Seminario Matematico della Università di Padova PY - 2019 SP - 145 EP - 179 VL - 142 PB - European Mathematical Society Publishing House PP - Zuerich, Switzerland UR - http://www.numdam.org/articles/10.4171/RSMUP/35/ DO - 10.4171/RSMUP/35 ID - RSMUP_2019__142__145_0 ER -