@article{RSMUP_2019__142__145_0,
     author = {Matsuda, Shigeki},
     title = {$\pi$-exponentials for generalized twisted ramified {Witt} vectors},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {145--179},
     publisher = {European Mathematical Society Publishing House},
     address = {Zuerich, Switzerland},
     volume = {142},
     year = {2019},
     doi = {10.4171/RSMUP/35},
     mrnumber = {4032809},
     zbl = {1444.11111},
     url = {http://www.numdam.org/articles/10.4171/RSMUP/35/}
}