Hi, I would like to use the natbib package for my citations in Lyx with the [sort] option so that multiple citations are ordered into the sequence in which they appear in the list of references. However, specifying
\usepackage[numbers,sort&compress]{natbib} in the preamble of my document produces an error when compiling to pdf. It says the package has already been called. Is there any other way of doing this in Lyx? Thanks, Guillaume