2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/168853We show the presence of a dense pure point spectrum on quantum graphs with Maryland-type quasiperiodic Kirchhoff coupling constants at the vertices.9 pages, written for proceedings of the AGA program at Newton Institute; To appear in Proc. Symp. Pure Math. (2008)Mathematical Physicstext