Tadakazu Sawada. Singular points configurations on quotients of the projective plane by $1$-foliations of degree $-1$ in characteristic $2. preprint, arXiv:2110.01753. 2021
Tadakazu Sawada. Quotients of smooth projective toric varieties by $\mu_p$ in positive characteristics $p. preprint, arXiv:1809.00867. 2018