The web page below shows how to modify standard BibLaTeX to allow possessive author names in citations (use all three lines in the URL) :
https://tex.stackexchange.com/ questions/22273/ author-name-of-textcite-as-possessive For example, suppose a bib file has the following entry: @book{knuth, author = {Donald E. Knuth}, title = {The {{\TeX}book}}, publisher = {Addison-Wesley}, date = {1984} } Ordinary usage might include \textcite{knuth}. The line above would look like: Ordinary usage might include Knuth (1984). But with the code shown on the web page, the following would hold. Modified usage might include \posscite{knuth}. This would appear as: Ordinary usage might include Knuth's (1984). OK. I can get this to work in plain LaTeX and perhaps in LyX by using ERT. But how can I add the possessive style as a Citation style in LyX's Citation dialog window for citations so that all citations can be done though the same interface and without ERT?
