2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/29150We comment on the work by Moler, et al., [Science 279, 1193 (1998)] concerning determination of the c-axis penetration depth in the single-layer compound Tl-2201 through measuring the magnetic flux due to isolated interlayer Josephson vortices.2 pages, LaTeXSuperconductivitytext