You can download the LAPACK reference implementation from www.netlib.org/lapack/.
For more standard information on LAPACK, please scope the following URLs:
http://www.netlib.org/lapack/
http://www.netlib.org/lapack/lawn81/index.html
http://www.netlib.org/lapack/lawn41/index.html
http://www.netlib.org/lapack/release_notes.html
http://www.netlib.org/lapack/lug/index.html