I wanted to use two different bibliographies in a document. There was already a bibliography defined and used in the document text. To add the second one the menu items Insert > List > BibTeX Bibliography ... were used. The second seemed to be there. It was shown separately from the first and if I double clicked the appropriate dialogue box would be shown with the file references, etc. However, none of the entries in the second bibliography were listed for Insert > Citation ...
There was a further problem in that immediately after trying to insert a citation from the second bibliography styles from my document type (Tufte handout) were inaccessible. They were substituted by a Plain TeX style. Eventually I managed to restore the Tufte handout styles by editing an existing paragraph (one that pre-dated the attempt to add a second bibliography). Regards, Trevor. <>< Re: deemed!
