mkdir  ~/usr/share/texlive/texmf/
cd 
ln -s  ~/usr/share/texlive/texmf/  ~/texmf
cd texmf
mkdir -p latex
# put all the necessary .bst .sty files  inn this directory
# to update TeX information
cd ~/texmf
sudo texhash

# for Lyx
# go to Tools -> Reconfigure
# this will take more than 10 seconds
# close Lyx application and restart it.