@Misc{ PinSte21, author = { Pinamonti, Andrea and Stefani, Giorgio }, title = { Existence and uniqueness theorems for some semi-linear equations on locally finite graphs }, journal = { Proc. Amer. Math. Soc. }, year = { 2021 }, pages = { }, URL = { http://cvgmt.sns.it/paper/5173/ }, note = { cvgmt preprint} }