Am Montag, dem 20.01.2025 um 07:44 -0500 schrieb Maria Gouskova: > The .cls file only mentions natbib once, as \ProvidePackage{natbib}.
That's odd! Are you sure this is the code (not \RequirePackage{natbib})? If it is the latter, add the following to your layout file: Provides natbib 1 HTH, -- Jürgen -- lyx-users mailing list lyx-users@lists.lyx.org https://lists.lyx.org/mailman/listinfo/lyx-users