Nishino’s theorem asserts that a Stein family of Riemann surfaces is locally trivial if the fibers are . A new proof is given by applying a result on the extension of holomorphic functions.
" proof of Nishino’s rigidity theorem." Kyoto J. Math. 60 (3) 1047 - 1050, September 2020. https://doi.org/10.1215/21562261-2019-0055