Configuring Lyx for including "Document Class" for "article (Springer LNCS)"

1. Download llncs2e.zip
2. Extract to or copy extracted folder llncs2e to /usr/share/texmf/tex/latex
3. In terminal: sudo texhash
4. In Lyx: Tools --> Reconfigure
5. Restart Lyx
6. In Lyx: Douments ---> Settings

In document class listing you must now see the "article (Springer LNCS)"